An idea I’ve been thinking about is to create a remix thread where someone posts a project and other people remix it.
Of course that’s not the full idea, silly!
The caveat here is that each remix is also open to be remixed, such that the people involved can eventually create a track only tangentially related to the original song, where each remix can be traced “genetically” back to the parent by following a chain of other remixes.
There doesn’t have to be only one direct remix “child” descendant from the original, by the way. Make a really diverse gene pool!