I've created this box for storing the curing base when not in use. The box has 4 holes for magnets with a 9mm clearance. You can glue them in and they'll be secured. There's also extra clearance at the bottom, so that foam can be placed, to not scratch the curing base. You can use the foam that comes in the box for the curing machine.
Printed at 0.2 on an Ender 3, no supports are needed.
You can find it on different 3D marketplaces, for FREE!
Thingiverse: https://www.thingiverse.com/thing:4919856
Cults3D: https://cults3d.com/en/3d-model/tool/uw-01-washing-and-curing-machine-storage
MyMiniFactory: https://www.myminifactory.com/object/3d-print-uw-01-washing-and-curing-machine-storage-179278
Pinshape: https://pinshape.com/items/107069-3d-printed-uw-01-washing-and-curing-machine-storage