Originally posted by katun24
If we're talking about hacks in particular, all hack submissions to SMWCentral are backed up at smwc.world, from 13 Jan 2019 onward, so you should be able to download rejected hacks there. For older hacks, I recommend checking smwdb.me.
Not just the hacks, I'm talking about other stuff like graphics and sprites as well. Not everyone resubmits them.