I've created a second Toothbrushes stand with 3 slots.

This is simillar with the other one posted on my profile : https://makerworld.com/en/models/173444#profileId-190581

Additionally, I've created a “dummy cup” for the third slot, in case you don't need to use it for the toothbrush, you can use it for the toothpaste or toothbrush head etc. ( see in the pictures)

The “dummy cup” can be found here: https://makerworld.com/en/models/177599#profileId-195351

Update 09.04.24: I've added a print profile for a 4 slots versions ( if you use A1 mini, just print it as it is, because it will not fit on the bed otherwise ;  For A1, P and X I recommend to rotate it so that it is paralel with the bed axis )