I have a betta. Actually I technically have five. I have a very peaceful male who lives with three very active females in a ten gallon at my parents house (they're technically my mother's fish). And I have a betta with me at college, he's residing in my cycled ten gallon tank but the problem is the tank is too reflective and he keeps trying to attack himself so I was thinking of getting Dwarf Puffers, likely one or a pair, for the ten gallon tank and something smaller for my betta, I have a vase set up that my betta used to live in which worked perfectly fine for him but I upgraded figuring he could have more room but he seems to be stressing himself out a bit. As a side note, the water temperature in the vase never went to a dangerous level, it stayed in the low 70's (Fahrenheit) which I've read is fine for bettas. I don't know. I guess I'll just have to wait and figure something else out.
Thank you for your advice everyone!