I handle my snakes regularly so i don't mind not being able to see them while they're in a little home

a shelving unit for the vivs isn't a bad idea, but my room is built with all these built in shelves already that take up a ton of space but they can only hold 10 gallons tanks, it's a really odd layout in my opinion. So since those shelves take up so much space, i just have the vivs laying around kind of all over the place haha.
Aaron where should i look for some stack-able enclosures? Would they just be some plastic tubs with holes drilled in the lid? Would that be the best way to take the space down?
Thanks for the responses!