Under $100 to start

24 ideas whose listed startup cost tops out at $100 or less. Costs are our estimates of typical tool spend.

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice. Full disclaimer.

AI ServicesFigure pending check

AI automation builds for small businesses

Earnings figure hidden until we can check it.

Fix one broken lead flow for a business you know; charge a build fee + monthly retainer.

$0–$10010 hrs/wkIntermediateReddit r/AI_Agents*

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AI ServicesFigure pending check

LinkedIn signal-based outreach agent

Earnings figure hidden until we can check it.

Build a lead-signal agent for one founder friend for a flat fee.

$0–$10010 hrs/wkAdvancedReddit r/AiAutomations*

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AI ServicesFigure pending check

AI-assisted blog & email writing for local businesses

Earnings figure hidden until we can check it.

Cold-email 20 local businesses offering one free sample post.

$0–$506 hrs/wkBeginnerReddit r/sidehustlestack*

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Creator/ContentFigure pending check

AI thumbnail design for mid-size YouTubers

Earnings figure hidden until we can check it.

DM 30 creators (10K–100K subs) on X with a redesigned thumbnail.

$0–$505 hrs/wkBeginnerReddit r/sidehustlestack*

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Local Business + AIFigure pending check

24/7 AI chatbot setup for dentists, salons & plumbers

Earnings figure hidden until we can check it.

Walk into 10 businesses with a live demo on your phone.

$0–$1003 hrs/wkBeginnerReddit r/sidehustlestack*

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Digital ProductsSource on file*

Notion templates built with AI help

$1M revenue in 2022 from Notion templates

Give one niche template away free, then sell the full version.

$05 hrs/wkBeginnerBusiness Insider*

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice.

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Digital ProductsFigure pending check

Niche Notion template on the Notion Marketplace

Earnings figure hidden until we can check it.

List one focused template (e.g. freelancer income tracker) at $5–$50.

$03 hrs/wkBeginnerReddit r/Notion*

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AI ServicesSource on file*

AI agent consulting for $1M–$10M businesses

solo consultant at $11K/month

Automate one problem in your own work, write it up as a case study blog post.

$0–$10020 hrs/wkAdvancedStarter Story*

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice.

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Agent-Run Micro-SitesFigure pending check

Vibe-coded AI tool site with SEO tool pages

Earnings figure hidden until we can check it.

Launch 10+ tool pages and submit to 20 directories.

$0–$5010 hrs/wkIntermediateReddit r/SideProject*

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Agent-Run Micro-SitesFigure pending check

AI resume / ATS rewriter

Earnings figure hidden until we can check it.

Help 10 job seekers 1:1 in communities, then share the link.

$0–$1008 hrs/wkIntermediateReddit r/SaaS*

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AI ServicesSource on file*

AI-assisted resume & LinkedIn rewrite service

$70 to $90 per customer

Offer 3 people a discounted rewrite in exchange for a review.

$0–$406 hrs/wkBeginnerBlackHatWorld forum*

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice.

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Digital ProductsFigure pending check

AI-assisted planners & printables on Etsy

Earnings figure hidden until we can check it.

Research 5 niches, list 20 products before launch.

$0–$2010 hrs/wkBeginnerReddit r/EtsySellers*

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Digital ProductsFigure pending check

Budget & spreadsheet templates on Etsy

Earnings figure hidden until we can check it.

Keyword research first; list 7 templates.

$0–$201 hrs/wkBeginnerReddit r/passive_income*

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Local Business + AIFigure pending check

Google Business Profile + review management

Earnings figure hidden until we can check it.

Fix one local shop's profile free; offer weekly posts + reviews monthly.

$0–$506 hrs/wkBeginnerReddit r/localseo*

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Agent-Run Micro-SitesFigure pending check

AI-built niche directory site

Earnings figure hidden until we can check it.

Pick one narrow niche and publish 50 genuinely useful listing pages.

$0–$505 hrs/wkIntermediateReddit r/SaaS*

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Agent-Run Micro-SitesFigure pending check

Programmatic SEO pages + affiliate content

Earnings figure hidden until we can check it.

Generate 50 pages from one structured dataset.

$0–$1008 hrs/wkIntermediateReddit r/Affiliatemarketing*

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Creator/ContentFigure pending check

AI + UGC short-form ads for small brands

Earnings figure hidden until we can check it.

Make a free 10-sec ad for a brand's real product and DM it.

$50–$10010 hrs/wkIntermediateReddit r/SideHustleGold*

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Digital ProductsFigure pending check

Niche AI prompt guide PDFs

Earnings figure hidden until we can check it.

Publish one $5 prompt guide for a single tool niche.

$03 hrs/wkBeginnerReddit r/digitalproductselling*

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Digital ProductsFigure pending check

Midjourney prompt bundles on Gumroad

Earnings figure hidden until we can check it.

Post example images on Pinterest/X linking to a $9 bundle.

$10–$305 hrs/wkBeginnerReddit r/AIContentAutomators*

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Local Business + AISource on file*

AI virtual staging for real-estate agents

photographer resells AI staging at $40/home, 120+ homes/month

Stage 3 vacant listings free for local agents.

$0–$505 hrs/wkBeginnerVirtual Stage Design*

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice.

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Creator/ContentFigure pending check

Local newsletter written with AI, sponsor-funded

Earnings figure hidden until we can check it.

Launch a weekly city newsletter; pitch 6 local businesses.

$0–$505 hrs/wkBeginnerReddit r/aisolobusinesses*

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Creator/ContentFigure pending check

Niche AI newsletter (sponsors + affiliates)

Earnings figure hidden until we can check it.

Publish 3 issues; cross-post best one to Reddit/X.

$0–$506 hrs/wkBeginnerReddit r/beehiiv*

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Local Business + AIFigure pending check

AI workflow helper for dentists & realtors

Earnings figure hidden until we can check it.

Sit with one office; remove 20–30 minutes of a weekly task.

$05 hrs/wkBeginnerReddit r/sidehustle*

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Agent-Run Micro-SitesSource on file*

No-code AI chatbot generator for blogs and businesses

$12K MRR

Ship a weekend MVP that builds a bot from a Notion page; post demo videos on X.

$0–$10010 hrs/wkIntermediateStarter Story*

Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice.

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