I saw a guy using these travel soap dishes and thought it was a pretty good idea.

https://www.amazon.com/dp/B08CXQH61J/?coliid=I3Q3R89PBI9CR5&colid=1BP3AMN2VN5FL&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it

https://youtu.be/mekXVtfFuZI