What is Two Free Tuesday?
Every Tuesday I drop two business ideas I’d hand to someone and say “go build this.” These are ideas I’m specifically not building — because I already have too many projects running, or because I’d lose interest by Wednesday, or because the idea is dumb but might work anyway.
Two reasons the ideas are free:
- Ideas aren’t the bottleneck. Shipping is.
- If you build one, it becomes a case study. Everyone wins.
Each Tuesday post includes:
- The pitch
- Who it’s for
- The stack I’d use (links to my tools page)
- Weekend-build estimate
- How to monetize it
- Why I’m not building it
- A DIY path and a “have me build it” path
- The exact prompt I’d use in Claude to plan the whole build
That last one is free if you want it. Drop your email in the block after each idea and I’ll send it over.
This week: one that could actually print money, and one that probably shouldn’t — but might anyway.
Idea 1: Invoice Nudge
One-liner: A dead-simple tool that follows up on unpaid invoices so you don’t have to.
Who it’s for
Freelancers, consultants, agencies — anyone who’s sent a $2,400 invoice into the void and forgot to chase it for three weeks.
How it works
- You CC your invoice email to a custom address
- It parses the client, amount, and due date
- If unpaid by the due date, it auto-sends follow-ups on day 3, 7, 14, and 30
- Tone escalates — polite, then firm, then “interest charges apply”
- Reply “paid” to any thread to mark it closed
Suggested stack
- Next.js 14 (App Router) + Tailwind + TypeScript
- Supabase for auth and database
- Postmark for inbound email parsing (does 80% of the work)
- Stripe for subscriptions
- Cloudflare Pages for hosting
Build time
One weekend. Two if you’ve never touched inbound email parsing before.
Monetization
- Free: 3 active invoices
- Pro: $9/mo, unlimited
- Agency: $29/mo, multi-seat
Why I’m not building it
I don’t freelance. It’s not my problem, so I’d lose interest by day three. But if you freelance, this is a real business — boring, useful, and people will pay for it.
Ship it yourself or have me ship it
- DIY: Stack above. The only hard part is inbound email — Postmark’s parse endpoint covers most of it.
- DFY: I’ll build it in a weekend and hand you the keys. Book a call →
Get the planning prompt
Every project on this site starts with a 30-minute Claude chat that turns the idea into a sequence of Claude Code prompts. Drop your email and I’ll send you the exact planning prompt I’d use for Invoice Nudge — run it yourself, get your own build plan, ship it.
I'm looking to build an website called Invoice Nudge. It's a recurring SaaS — auth, billing, multiple users, admin panel, inbound email parsing. It should be a dead-simple tool that follows up on unpaid invoices so you don't have to. Ask any questions then give me the prompts needed to build the website in Claude Code. I'd prefer to use the following stack but am open to other free options:
- Git hub as repository
- Next.js 14 (App Router) + TypeScript + Tailwind CSS
- Supabase for any minimal data storage (orders, generated outputs)
- Cloudflare Pages for hostingIdea 2: Out of Office as a Service
One-liner: A service that writes a believable out-of-office auto-reply and — for an extra fee — generates fake vacation photos to post on LinkedIn.
Who it’s for
People who need a mental health day but work somewhere that requires a paper trail.
How it works
- Pick a destination (Portugal, cabin in Vermont, “visiting family”)
- AI writes the OOO message with a realistic return date
- AI generates 2–3 stock-looking vacation photos
- Optional: drip-schedule a “sending this from the road” LinkedIn post for day three
Suggested stack
- Next.js 14 + Tailwind + TypeScript
- Supabase
- Any image generation API
- Stripe for one-time payments
Build time
A weekend. The landing page is four hours.
Monetization
- $19 per trip
- $49 deluxe with photos
- $99 full alibi with scheduled LinkedIn post
Why I’m not building it
The unit economics are bad unless it goes viral. Building a joke business that needs to go viral to work isn’t a plan — it’s a hope. But if you think you can market it, it would print money for a month. For some people, a month is enough.
Ship it yourself or have me ship it
- DIY: Most of this is a prompt and a form. Landing page in four hours.
- DFY: I’d rather build this for someone who thinks they can sell it. Book a call →
Get the planning prompt
OOO as a Service is a different build — one-shot generator instead of a recurring SaaS — so the planning prompt is tuned for that. Drop your email and I’ll send it over.
I'm looking to build an website that writes a believable out-of-office auto-reply and — for an extra fee — generates fake vacation photos to post on LinkedIn. Ask any questions then give me the prompts needed to build the website in Claude Code. I'd prefer to use the following stack but am open to other free options:
- Git hub as repository
- Next.js 14 (App Router) + TypeScript + Tailwind CSS
- Supabase for any minimal data storage (orders, generated outputs)
- Cloudflare Pages for hostingRecap
- Invoice Nudge: Real business. Boring. Would probably work.
- Out of Office as a Service: Joke business. Would also probably work. Briefly.
Ship one. Tell me.
FAQ
Are these ideas actually free to use?
Yes. Take them, build them, sell them, keep everything you make. The only ask — tell me if you ship one so I can feature you.
What do I get when I opt in for the planning prompt?
One email. One prompt. Paste it into Claude and it generates the full build plan — stack decisions, schema, API structure, and the sequence of Claude Code prompts to actually build it. Takes about 30 minutes of back-and-forth. Same process I use for every Build and Bail project.
Why give away ideas (and prompts) that could make money?
Because I can’t build all of them. The pipeline is infinite. Bandwidth is finite. If an idea sits on my list for six months, it’s not getting built — someone else might as well. And if the prompts help you ship faster, that’s the whole point.
What’s the stack you usually recommend?
Next.js 14 App Router, Tailwind, TypeScript, Supabase, and Cloudflare Pages. Full breakdown on my tools page.
Can I hire you to build one of these?
Yes. Every Tuesday post includes a “have me build it” link. Typical engagements: a weekend MVP handoff, a build-and-launch package, or a consulting session where I plan the whole thing with you.
When does the next Two Free Tuesday drop?
Every Tuesday (unless I bail on this series).
More from Build and Bail
- The tools I use to ship every project
- How I built and listed WhoStat on Flippa
- Emergency Pants: the pants delivery service that shouldn’t exist
See you next Tuesday.