It's a soap dish for the shower. Don't let your soap stay wet and get all slimy! Use a soap dish!

It stays put pretty well on a slight incline, even when wet, in my shower, but you could stick some non-stick feet on it, or maybe just spread some rubber cement on the bottom (although I don't know if that eats away at PLA, or whatever material you may use).

Printed in PLA at 0.2mm layer height, without support.