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World savingEasy1 to 2 weekendsUnder $100Web appWorld saving

Leftover Paint Match

Neighbors give away half used paint cans instead of tossing them.

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The idea

Most garages have partly used cans of paint that end up thrown away. This site lets people post leftover paint with color, finish and amount, and lets others nearby search for what they need for small projects.

Who it is for
Homeowners and renters doing small paint projects
How it makes money
Sponsorship from local hardware stores
Suggested stack
Next.js, MySQL, Tailwind, hosted on a small VPS
Launch cost
Under $100

Your first AI prompts

Paste these into Claude, Cursor or Lovable, in order. Check that each one works before moving on.

PROMPT 1 OF 3

Build a web app called Leftover Paint Match. Start with sign up by email and a Post Paint form with fields: color name, photo of the can lid, finish, type (latex or oil), amount left, zip code and pickup notes.

PROMPT 2 OF 3

Add a search page filtered by zip code distance, finish and color family, with listings shown as cards. Add a Request button that emails the poster with the requester message and lets the poster mark the can as claimed.

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PROMPT 3 OF 3

Add a small counter of cans rehomed, a page with local drop off options added by admins, and a sponsor spot for a local hardware store.

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The 10 step playbook

  1. 01Claim your ideaPut your name on it and unlock every prompt and the full playbook. Always free.
  2. 02Domain and nameBrainstorm a short name, check the .com, and register it.
  3. 03Trademark basicsSearch for conflicts before you fall in love with the name.
  4. 04AI build kickoffPaste the prompts below into Claude, Cursor or Lovable, one at a time.
  5. 05Server and hostingPick a host and have your AI walk you through setup.
  6. 06Backend and dataLogins, database and payments, one prompt at a time.
  7. 07Frontend and designScreens, colors and a simple logo that look professional.
  8. 08Go livePut it online, then submit to the App Store and Google Play if it is a mobile app.
  9. 09Marketing planLaunch posts, local outreach and your first 100 users.
  10. 10Launch and growShip it and add your live link to earn the Shipped badge.
Your full playbook for Leftover Paint MatchEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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