I think most people know this, but w/e.
on FD, it you reverse aether under the lip a certain way, Ike will slide up from underneath and barely grab the ledge.
Edit: even deep inside the lip, near the top of it, Ike could return barely over the edge with a reverse aether.
Also works underneath most stages, even a part of lylat cruise. If you DI towards offstage, then DI back towards the stage right before going up, you should barely get back to the edge (unless you're entirely underneath...)
Pretty safe way to recover if you could practice with it.