This is designed to hold 4 toothbrushes and toothpaste. Key to the design is drainage so water passes to the side tray, easy to drain and stops the built up of water etc. that I experienced in all the holders I had purchased. I also have designs for electric toothbrushes and combination of electric and standard. Hope this is of use to people, has helped in our bathroom.

Update!!

I've added some updated designs that take a fresh approach to the drainage alongside more options:

Storage for two toothbrushes and tube of tooth paste - https://makerworld.com/en/models/415612#profileId-317755

Storage for four toothbrushes and a tube of tooth paste - https://makerworld.com/en/models/415639#profileId-317796

Storage for four electric toothbrushes each with storage for two space heads and a tube of toothpaste - https://makerworld.com/en/models/415655#profileId-317814

Hope these are useful folks! 

Happy printing :-)