Local businessMedium2 to 3 weekendsUnder $100Web app

Rental Slot Booker

Kayak, bike and paddleboard rental shops take hourly bookings with waivers.

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The idea

Small outdoor rental shops run on phone calls and paper sign up sheets. This app shows live availability by item and hour, takes payment, and collects the shop own waiver text with a signature. Staff see a day sheet of what goes out when.

Who it is for
Independent kayak, bike and paddleboard rental shops
How it makes money
Monthly subscription or small fee per booking
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 Rental Slot Booker. Start with an owner login and an Inventory page with item types (name, photo, quantity, hourly price, half day price, full day price) and opening hours per weekday.

PROMPT 2 OF 3

Create a public booking page: pick date, item type, quantity and duration, and show only times where enough units are free. Save bookings with customer name, phone, email, items, start, end and status. Add a staff Day Sheet showing what goes out and comes back each hour.

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PROMPT 3 OF 3

Add Stripe checkout at booking, an email confirmation with a link to sign the shop waiver text with a typed name and checkbox, and a weather cancel button that refunds and emails everyone booked on a chosen day.

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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 Rental Slot BookerEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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