From a raw CarPlay note to a full business proposal — free

Most ideas die in the gap between "that could be a real thing" and "I've actually started." It's not money that stops people — it's not knowing the path from a vague thought to something concrete. So here's the whole path, using only free tools, starting from a note you captured while driving.

We'll follow one example all the way through: a thought you dictated on the motorway — "an app that reminds you which wines you liked, by scanning the label." That's the seed. By the end it's a proposal.

The free stack, end to end

Four stages, each free, each feeding the next. The skill is less about any one tool and more about the handoff between them.

1. Capture — Note Now (free). The raw thought, in your own words, transcribed and timestamped.
2. Structure — any free markdown editor (Obsidian, the free tier of Notion, or even a plain text file). Where the raw note becomes an outline.
3. Expand — a free AI model (the free tiers of Claude, ChatGPT or Gemini). Where the outline gets fleshed out into detail.
4. Plan — a free project board (Trello, or a Notion board). Where the proposal becomes tasks you can actually start.

Stage 1 — Capture the seed properly

This stage already happened, in the car. But how you captured matters enormously for everything downstream. A scribbled "wine app" tells the next stages almost nothing. The full dictated sentence — "an app that reminds you which wines you liked by scanning the label, because I always forget the good ones by the time I'm reordering" — carries the why, the use case, and the user, all of which the AI will lean on later.

This is the quiet superpower of voice capture: you naturally say more than you'd ever bother typing. Keep that richness. Don't summarise your own note down to a keyword — paste it forward whole.

Stage 2 — Structure it into a skeleton

Open your markdown editor and paste the raw note at the top. Underneath, rough out a skeleton — don't write the content yet, just the headings a proposal needs:

• Problem — what's broken today
• Who it's for — the specific person with that problem
• The idea — your one-paragraph pitch
• How it works — the core flow, three or four steps
• Risks & unknowns — what could kill it
• First steps — what you'd do this week

You now have an empty proposal and a rich raw note. That's exactly the input the next stage is hungry for.

Stage 3 — Expand with a free AI model

Paste your raw note and your skeleton into a free AI model and ask it to fill the skeleton in. The detailed prompts for this are a guide of their own — see prompt engineering your brain — but the simple version is: give it the note, give it the headings, ask it to act as a product strategist and complete each section, flagging assumptions.

What comes back won't be perfect, and shouldn't be treated as gospel. It's a strong first draft that turns your six empty headings into six paragraphs of real thinking — competitors you hadn't considered, a risk you'd missed, a sharper way to frame the problem. You edit it down to what's true. Ten minutes, and the skeleton is a proposal.

Stage 4 — Turn the proposal into a plan

A proposal you don't act on is just a longer note. The final free step is to lift the "First steps" section onto a project board — a free Trello board or a Notion board works perfectly. Each next action becomes a card. Now it's not an idea anymore; it's a short list of things with a status.

That's the full journey: a sentence said out loud at a red light, carried through four free tools, arriving as a structured proposal with a to-do list. No budget, no permission, no special access — just a clean handoff from one free thing to the next, starting with a note you'd otherwise have forgotten.