This modular kit can be expanded and placed in the order you prefer, they can be locked together or not.
I've designed a few different sponge holders, soap dispensers and brush holders.
The bottle cap has a diameter of 25mm and should fit a standard soap pump.
I've been trying to separate the different components so I could avoid using the multi-colour printing, saving time and filament, but you will need the AMS for the soap dispenser icons and the top rings if you want to use multi-colour.
Some of them will need to be glued together, and some will also hold in place, but I'd suggest glueing them anyway.
The single printing profile contains all the separated pieces you need, you can select which one you want to print. I'm a newbie, so please let me know if you have any suggestions.
I've printed them in white rock PLA and black PLA-CF just because I like the matte effect and texture, but you can use your material/colour.