I saw this basket in which you can store you're soap and sponges but did not like the design so i started all over and made my own design with fusion 360 ( still learning ) .
I hope you like it .
You can use waterproof sticky tape to mount it to the wall, or use the added profile holder with mounting holes.
I also designed a model for mounting on your shower bar. Voronoi shower basket Bar mounting 22mm by mkersjes - MakerWorld
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