For most pc cases there are a few empty CD drive lots on the front out of a computer. Now you can actually harness that space with a draw printed to fit the standard 5.25" drive slot. You can now keep any tools needed to take you PC in the case itself along with any USB and other items. As these fit within the standard drive slot, if you wanted all your drive slots to be draws then just print as many as you need.
The draw assembly comes in two pieces, the draw itself and a housing that is screwed into place like a usual CD drive.
The best thing is both parts do not require support material and each piece can be printed on a 150mm x 150mm base.