What snakes can be kept in a 3x2x2ft vivarium?

So, I ordered two vivariums of this size since I have space in my room. I am planning on putting a BP in one, and will obviously wait a good year or two before I get a second snake. But if I was to get another snake at some point, what other sort of snakes (at a full grown size) could be kept in a vivarium this size?

(I know, it's so bad that I'm already planning on a second snake despite not even having the first yet, but I've been planning for a BP for almost half a year now, and well... You know how it is... :snake:)

(edit; oops should have put this in general herp but I got too excited looking at brazilian rainbow boas and posted in a rush...)

I have got a corn snake in a viv that's it slightly smaller so a corn would be a good one x

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Pure dwarf locality BCI like a Tarahumara
King / Corn / Milk snake
African House Snake
Savu Python
BRB male

Any of the Antaresia (Childrens Python, Stimson, etc)