Deli cups and PVC holder for water bowl questions. Thank you!

[AbsoluteApril]

Thank you so much! May I have a link or where did you buy them? Does water spills after you remove the rubber?
I'm thinking if my bowls now are too low so the substrate get inside easily.

I bought them at walmart in the dog bowl section. I removed the rubber before using and threw it away, the water doesn't spill usually when they are moved around (most of my snakes have flat paper/corrugated as bedding, atbs and colubrids have reptile prime substrate, yes the snakes can still push substrate into the bowl but that's the case with any dish).
They had 3 different sizes, I mostly use the medium size, it's not very shallow. The smallest one are rather shallow.

edit to add - haven't had any rust issues, I use a regular green/yellow sponge for normal cleans and steel wool if they need a good scrubbing.