Created a Keyholder, with some parts from Lyles Svendsen great design, it uses M3 bolt to connect the parts together or can be glued.

It has a screw hole in the back but would be light enough to use 3m tape or something similar. 

Only downside I have is the part where the lifter arm connects to the wheel has to be painted if you print them in a different colors(i did silver for skull and rod, got to find a idea to make it so you dont need to.