A shampoo holder that attaches to a rod in the shower. I also added the test files to make sure they fit on your printer. The rod in my shower is 18.7mm in diameter, so make sure you have the same size before printing. In the pictures, you can see that I had to use a smaller rod to hang the bottle holder. This is because I was experimenting with filling the printed parts with resin. Unfortunately, the resting temperature was too hot and the part deformed, so I couldn't fit it into my shower properly. The solid model should be working as intended.