Help! Bladder snail needs a jar-home fast. Advice please☺️

So I’m in the process of cycling an aquarium and a bladder snail snuck in with some plants. The tank is taking forever to cycle and the snail has grown bigger and cuter and now I’m attached to the darn thing. The problem is once my tank is done cycling, the fish that are moving in will absolutely eat him😔
Sooo, how fast can I set up a jarrarium that would be safe for him? Does it need to cycle like a fish tank or could he survive with substrate, a few plants, and some food? Can it be closed so he doesn’t escape? This would be temporary housing until I can get him a better tank to live in permanently. Thanks for any help you can send my way🐌