Weather proof Altoids insert
thingiverse
I have seen others make inserts but not ones that would be splash or dust resistant . this uses a 1/8 or .125 Dia rubber foam seal it holds it in a channel along edge and seals against lid only.
Download Model from thingiverse
With this file you will be able to print Weather proof Altoids insert with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Weather proof Altoids insert.