In Taiwan, every receipt you get has a lottery number. A lottery is drawn every couple of months, so you need to hold on to a lot of receipts when those numbers come out. This device allows you to do so in a tidy manner. Here's the patent (look for patent no. 310671):
http://twpat3.tipo.gov.tw/tipotwoc/tipotwekm?0005DFEE0006020100000100000C00A000000001000000000^10
Use either plastic or super glue to join the two halves together. If you have a cheapo printer (like mine) then some filing may be necessary to get the two halves to mate up perfectly.
Good times.
TYFP_half.stl | 68.6KB | |
TYFP_half_Holey.stl | 163.9KB | |
TYFP_half_NoSanding.stl | 70.2KB | |
TYFP_planck.stl | 12.8KB |