So somebody's kind of pissed

This is my little roborovski robo, she's about a year of age and she's thrown out her little back, so the vet says she has to live in that little container you see behind her and tell her back is better because she can't be too active and she doesn't know how to hold still, what am I going to have to do to make up to her after she's better? Also if you got any ideas on what I can do to secure her a water container in there that would be great, cuz currently I'm just using a milk carton lid that I'm having to fill up every few hours