Eldritch Horror Gate Collection

thingiverse

This is the files for the holder and sleeves. The gates themselves can be found at - http://www.thingiverse.com/thing:1816960 The sleeves can be painted or printed with colored material in red, blue and green so that it is easy to see what color gates are on the board at any time. You could just print colored gate holders, but you'd need a large number in each color. This solves that problem by your needing to only have a fair number of sleeves to slide over the bases.