Boomla - a web development platform which I call a Website OS https://news.ycombinator.com/item?id=21292726
I visit them basically every day. Not to be an early adopter but to get inspiration. ProductHunt is good for checking how random business/app/website ideas are received. IndieHackers is more of a motivational tool because people share their struggles and wins. Both are are great for new product discovery as makers use them as announcement platforms.
https://github.com/mmccaff/PlacesToPostYourStartup https://www.indiehackers.com/forum/subreddits-for-indie-hack...
You would still have to reach out to the founders and offer something. Is this what you are trying to do? In this case, how would you approach it?
PS: I also read highscalability.com - the dude usually talks about cool new products and stuff they are making. It's usually heavy tech related but always interesting reads.
You need scrape every new-registered domains, extension with .io or filter with keywords, then manually check each newly registered domains, typically, you can find some very new projects or products.
Btw, except ProductHunt and IndieHacker Marshallbananas mentioned, another website that list popular small business ideas, but I forgot its name, damn it.
I’m not trying to be snarky but if this was easy then what would VCs need to do?
2. You need to be in a group where people encourage crazy ideas.
HN and the Bay Area have a lot of 1 but not 2. I guess you also have to be somewhere where people don't take themselves too seriously.
A lot of them also seem like crazy fun ideas at first, and often you hear people saying they're just sticking around for the community. You could feel it gain momentum, people get excited and energetic.