Free every Sunday
Half of them cost $0. Each one is tagged by cost, time and skill, with an AI prompt to get started. Then I test the best one with my own money, so you don't have to.
+ 15 more, sorted into no tech skills, with AI, and for local businesses.
Deep dive: find a side hustle in 20 job ads, step by step, with the prompt to copy.
01 · What you get
The quick list comes first, so you get something useful from the first screen. The depth comes after, for the idea you actually want to try.
Sorted into no tech skills, with AI, and for local businesses. Each tagged by cost and time.
One short thought to take into your week. No essays.
Why it works, three steps to start this Sunday, and an AI prompt to copy.
Click the idea you'd try. The most-clicked one gets next week's deep dive.
My own test of the week, with every dollar on a public scoreboard. Wins and misses.
02 · The filters
No vague "start a blog". If it can't be started small, it doesn't make the list.
A first version or a first test in a day or two. No months of building.
Most cost nothing. None need more than $100 to test.
No team, no hardware, nothing fragile to maintain for others.
Each one comes with a number to watch, so you know if it's worth continuing.
03 · Library and tools
Browse the idea library today. The tools below already run behind Sunday Lab; tell me which ones you want, and the most-wanted one opens up first.
Every idea explained in plain words: why it could work, how to start this week and the honest reason it might not. Search by topic, budget or the people you want to serve.
Type in your own idea and get the full report: competitors, prices, the devil's advocate and a 7-day test plan.
How I bought a 545,000-follower Instagram page without putting in my own money, and sold it seven years later.
A Telegram bot tuned to your profile: your skills, budget and hours. Every morning it sends the ideas that fit you best.
A tool to brainstorm your next moves and grow your business. It orders every idea by low cost and high impact, so you know exactly what to do next.
I already use these myself. Tap "notify me" on the ones you want, and the most-wanted one opens up first.
04 · Who runs the lab
Seven years ago I bought an Instagram page with 545,000 followers without putting in any of my own money. I paid the seller back from the page's own income over 20 months. I grew it to 1.3 million followers, reinvested most of what it earned, and recently sold it for 2.5 times what I paid.
That income bought a small house in Tenerife, mostly for friends and family. It also helped me buy a house in the Netherlands, which I remodelled into two apartments: we live in one, and the rent from the other covers about two-thirds of our mortgage. On the side, AI music I promoted on my pages now earns $3–4k a month in royalties.
None of it started with a big idea. Each one started with a small, cheap test. That's what Sunday Lab is: I find the ideas, test the best one myself, and hand you the rest, so you can start your own.
05 · Questions
Yes. The Sunday email and the idea library are free. The full research report behind an idea will cost about the price of a coffee. That's optional, and the emails stay free.
Because one idea rarely fits everyone. With 20, sorted by cost, time and skill, there's usually one that fits you. Then one gets the full step-by-step treatment.
No. At least a third of every list needs no tech skills at all. Where AI helps, you get the exact prompt.
Please do. That's the point. If you do, tell me how it went: erwin@sundaylab.co.
A research bot reads startup, AI and side-hustle newsletters and trend signals every day. I pick, rewrite and check them, and link the source.
06 · Join
One minute to scan. One idea worth your weekend.