I was browsing some toothbrush holders and came across tooth paste squeezers. So I thought to myself why not combine these two. 

This holder has two holes for toothbrushes a hole for toothpaste (wide and narrow cap). The right side has its own toothpaste squeezer with ratcheting mechanism on the pin that ensures that the wound up toothpaste does not unwind.

The 3D model consists of three parts. The base, the ratcheting pin and the locking pin. The assembly is really easy, just insert the ratcheting pin into the hole and lock it axially with the locking pin. If you want to squeeze the tooth paste, just insert it in the slot of the ratcheting pin through the slot in the base and turn in clockwise. The ratcheting mechanism does not allow it to unwind so in order to remove the toothpaste just pull out the ratcheting pin from the locking pin and then you can unwind. Then I used some reusable double sided tape and attached it to the wall - it works surprisingly well.

The base I printed in PLA with three perimeters, 10% infill, organic supports and the hole with teeth oriented laying on the bed. Both pins are printed in PETG but I suppose PLA will work as well. The ratcheting pin is also printed standing up with supports in the slot for locking pin and under the ratcheting wings. Both are quiet easily removed with small flat head screwdriver. The locking pin is printed standing up but does not require supports.