This is a bathroom caddy with two trays designed for holding all your bathroom related items.

I've included the .f3d file in case anyone wishes to remix this, or make some improvements.

Print

You will need:
1x Base
2x Tray
1x Stand FL - Bottom
1x Stand FL - Top
1x Stand FR - Bottom
1x Stand FR - Top
1x Stand L - Bottom
1x Stand L - Top
1x Stand R - Bottom
1x Stand R - Top
(Optional)
4x Stand L-R Sleeve
2x Stand F Sleeve

The optional sleeves may add some additional support if you put some heavier items on the top tray, but I did not end up needing them.

All parts should be printed laying down, ensuring that the little protrusion on the stands is facing up. The FR Top and FL Top Stands will require supports for the hook, but that is all.

Note for Ender 3 users like me, you will need to set Build Plate Adhesion to None (Cura) in order to fit the larger Base and Tray parts.

Settings

All parts were printed at 30% infill at 0.2mm resolution on a 0.4mm nozzle. For additional strength of the trays, I would recommend increasing the infill if you plan on using heavier items. Most of the parts do not require any Supports of Rafts or anything like that, just ensure that they are printed flat.

Build

To build this (including the optional components), start with the Base, and slot in the bottom Stands for FL, FR, L and R (as facing the curved side). You can now slide on the first tray which will hook over the L and R stand arms, and sit upon the little extrusion on the front stands for a flush fit.
Now take the L and R top half of the stands, and slide over the L-R Sleeves (if used). You can now slot the Top half of the stands onto the bottom. It might be a bit of a tight fit, but that's the point. Once fitted, the sleeves should be able to slide down onto the little protrusion to stop them falling all the way done. Repeat this for the FL and FR stands with the F Sleeves.
Finally, you can slot the last tray over the top. The FR and FL Top Stands include a small hook in which the tray will clip into for extra rigidity.