https://www.deviantart.com/thebabybunch/art/OLD-Dungeons-and-Diapers-A-Mod-for-DnD-5e-581402194
Something like this could be an additional thing to add if it is what you are going for.
I have a couple experiences with cloth diapees and they are
1) baby cloth diapers as boosters in cheaper disposables to add absorbance and wicking.
2) Adult cloth diapees from dependeco They are really great for thickness. However, I am not sure how I feel about needing to use a waterproof cover...
I have to say that while I love wearing/using diapees, my favorite little item is my Fluttershy plushie. I have had her for around 8 years, but love to cuddle with her as I fall asleep.
I have often overestimated my diapees and have leaked. It is an odd feeling having pee run down your leg, and cleaning up from that is a bit annoying, but oh well. diapers are still great.
I bought one of their onesie skirt sets a while back and the onesie itself is made of rather thin material, but the skirt is pretty decent. The main complaint that I have about it is the armpit area is a bit too tight which can get uncomfortable after a while.