For the shower, I thought it would be great to tap into the honeycomb storage wall (HSW) system which has a ton of shelving options. This allows you to build your own shower system. I'm just providing a way to anchor it to your shower glass.
The anchor is designed to be flexible enough to accommodate a number of shower glass thicknesses. I have include the code if you want to modify any of the variables yourself. Larger honeycomb systems might require more than one anchor.
Honeycomb system: https://www.printables.com/model/152592
Honeycomb shelf: https://www.printables.com/model/497687-honeycomb-storage-wall-shelf-tray
Hexagonal basket: https://www.printables.com/model/454195
HSW hooks: https://www.printables.com/model/535184
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NOTE: For maximal build strength, it should be printed sideways which unfortunately requires support for the two hexagon interfaces to the honeycomb system.
The author marked this model as their own original creation.