Ask HN: Is there a platform for sharing ideas that people want to “give away”?

I'm in the camp of "Ideas are worthless, execution is everything". Not in a literal sense, obviously, but I definitely have more ideas than time for executing them. Most of them are fun little thing or tools that would be helpful but not enough to actually do them.

I would like to submit them somewhere and maybe someone likes it and wants to create it. Or maybe I could get input why it's a stupid idea or how to improve them.

It would be also nice to see others' fun ideas. Maybe find a collaborator to work on them together.

Are you aware of such a platform? If there is none, what do you think about the concept?