Fun colorful ones are the best! I got a bunch of Mexican pottery ones - the only issue is that they are THICKER than the plastic default ones - so the plugs and switches were..."indented" and not flush with the cover. I found a way to shift the inside bits forward a bit so they worked better, but it was...annoying.

So yeah - colourful ones, but still *thin* would be way easier :D

A shower chair makes a lot of sense - totally a better option than what my mom used - which was an upside down milk crate, with a folded towel on top, LOL