I don't have permission to update the wiki but I wanted to report that, out of the 3 mystery boxes I found, I got 2 beach warp totems (one at a time) and 1 farm warp totem :) I hope this is helpful!
It’s seems like quite an expansive list, I know the golden ones can give cooked goods as well. I’ll try to keep track of it and note it on the wiki. Everyone’s just going slow with the edits right now because we don’t know a lot and until we start doing some code digging for specifics we won’t know.