Any gecko from New Caledonia, such as crested geckos, leachianus, gargoyle geckos, agricolae, or chahoua. All of them can be fed completely on Repashy meal replacment diet. It's a powder that you mix with water, very cheap and easy. You can also feed insects if you decide to, but it's not necessary. I told myself I would never get another lizard/gecko because I hated dealing with feeders (crickets mostly), then I found crested geckos. My addiction has expanded ever since then. New Caledonian geckos are one of the best reptiles IMO, they are so easy and docile. I wouldn't risk getting something that your roommate hates like a spider or scorpion. Wait until you move out, no sense in risking it.
Here are a few of my New Caledonian geckos:
Leachianus
Hatchling crested geckos
Big adult male
Agricolae
Hopefully that will help you decide!