Glasses Holder for Shower/Bathtub

I wanted to make a dedicated glasses holder for the shower where I could put my glasses and easily find them when needed.  This avoids the problem of me putting down my glasses (e.g., on the ledge of the bathtub) and struggling to find them again when I have finished my shower.  I am very nearsighted…

The design is essentially a rectangular box that has solid lateral faces (to reduce water splashing on the lenses during showering) and a perforated bottom surface to allow any water to pass through that happens to get into the holder through the open top.  I went through a number of iterations to strike a balance between structural rigidity and material use.  For the lateral walls, I kept the walls pretty thin at 1.2 mm (or 3 passes with a 0.4mm nozzle) and overlaid a hexagonal support structure to provide a little extra rigidity.  I decided to also make the perforations on the bottom surface a hexagonal shape to keep the pattern consistent across the part.  For my print in PLA @ 20% infill, the final part weighed ~38 grams. 

There are holes in the back lateral surface for hooks to hold the glasses holder to the tiles in a shower/bathtub using generic suction cup hooks.  I purchased this generic set of suction cup hooks off of Amazon Suction Cup Hooks Wall Hooks for Hanging All Purpose Hook Wall Hangers Without Nails Heavy Duty Wall Hooks-Made in USA (3 lbs/ 6 Pack) (Amazon Link: https://www.amazon.com/gp/product/B01FGWVEKG/).  That being said, this design will likely work with pretty much any of the suction cup hooks available online.  

Horizontal Cross-Section of the model looking towards the bottom:

Vertical Cross-Section of the model looking at the back: