Halloween fun for chinchillas?

Hello all! new here, i recently decided i wanted to try to make some fun toys for my 4 year old chinchilla Joey (i usually buy his toys) but since halloween is coming up and im low on cash, i was wondering if there was a specific type of paper mache' that i can use to make him some fun (temporary of course) structures and huts to play in!



I usually use the old regular water, elmers glue, and white flour to create anything paper mache creations but i dont want to give my little guy anything toxic or hard to digest?



I also have the option of a hot glue gun some creations but am too scared he might eat the glue and get sick.....i cant seem to find anything on weather these two things are "ok" or safe at all.



any help would be great thanks!