Disclaimer before I say anything, I am by no means an expert & have not kept any reptiles besides my BP, so please take this with a grain of salt lol
I've heard a lot about garter snakes being good beginner-intermediate snakes, they're handleable, can be co-habbed and are more active than bps so they would utilize a naturalistic enclosure more. There aren't really any fancy morphs but there's quite a few varieties that looks slightly different & I think they're all just gorgeous. And they musk, but I caught tons of wild garter snakes as a kid and was never musked once haha.
Again, I have never kept any garters so there's a chance I could be totally wrong about this, but I did briefly look into them before I decided on getting a bp & I've interacted with them in the wild, & they seem lovely![]()