i have a cwd and was wondering that if i make a cage what else could go in it if the dragon would pass away one day or if theres nothing that has the same needs.

cage-
6 ft. high
2.5ft deep
4 ft. long

specifics-
temp 84-88
night temp. 76-84
humidity- about 70 - 80 %
many branches

so i basically wanna know that if the dragon dies if i could put anything else in it and it would be happy