This is a base I created to hold the Explorer tokens for the In Tenebris Lux board game, by Golden Age Games.
Once assembled the token simply slides in through the slot at the top of the frame. It fits loosely enough there should be no risk of damage to the token.
You'll need to print 1 base and 2 frames for each token holder. The frames can be glued together if necessary, but I find the base clamps them together tightly enough for my needs.
This is not an official Golden Age Games product.