I smelled quarantine early on in this thread.
while I can't think of any legitimate reason to cohabitate three entirely distinct species simply because they have vaguely analogous husbandry requirements, I think I'll refrain from further comment.
skiploder, after I add a few womas to my collection, indigos are next up on the list. I hope to bend your ear in a few months if you can spare a few minutes.
p.s. to the OP, independent of anyone's opinion regarding feeding in a separate enclosure, you shouldn't worry about your snake ingesting a little aspen. no cause to worry on that account.