Someone posts "need my car detailed" on Facebook Marketplace.
You send that job to a local detailer. They pay you $30–50.
You never touch the work.
Mobile car detailing is the best starting point. High ticket ($150–300 jobs), urgent timing, and most detailers have zero marketing skills. They're perfect buyers.
Spend 30–60 minutes on Facebook Marketplace and Craigslist looking for "ISO detailer" or "need my car detailed." DM 20 people a day.
Find 3–5 detailers in your city who'll pay for exclusive leads. Start with a flat per-lead fee ($30–50), scale to monthly retainers as volume grows.
Finding people who need things and connecting them to people who do things. That's the whole business. The only difference from your last idea is you keep the money.