What to put in my display cage?

[Aeries]

I also back the garter snake suggestions! One will be perfectly happy in that size of a tank, and they do make awesome display animals. They love to bask out in the open, and they're very curious, they'll come and investigate things that are moving around them, and are pretty active. Even when they're 'hiding' they usally have their head stuck out to see what's going on.
Lots of color choices out their too!

[Seru1]

Have thought about a lizard instead of a snake? There are a number of lizards that could live in that sized enclosure.

Good luck!
Jim Smith

Thats a good idea to. I'm Getting into Rhac Geckos because they are so cool and low maintenance.

[MitsuMike]

Thats a good idea to. I'm Getting into Rhac Geckos because they are so cool and low maintenance.

Yea a colony of female leos would love that tank, or a pair of nice beardies.

[PurplePython]

You can always divide the tank into 3 sections and start to collect tarantulas

or scorpions, small lizards, ect

itd be cool to divide it up and get 3 different things.