Help me fill an empty viv

[Dude123]

Hey everyone. I guess this will be a follow up to the thread below this one. I've got an 18x18x18 Exo Terra that was being used as a grow out tank that will soon be empty. I'm not too well versed on the smaller options for this size enclosure and was hoping you guys could help me find some ideas.

My first thought was a male hognose or sand boa but I'm not sure if this will be big enough. I've also been thinking about cresties or maybe a pac man.

Any reccomendations for me?

Thanks!