I have the beat up one is a really crappy small plastic tank it came in from the school
I ended up putting the other one in huge glass cup (it was really the only option I had since I needed to separate them asap).
I guess what is a good option to get them in a better situation without spending a ton of money, since I don't think we are even going to get to keep them. We were only caring for them over Christmas break, but I wish i could get them in a better set-up before we have to give them back.
I may even just tell the teacher that they died so I don't have to give them back. Cause fish in a third grade classroom...yikes.