There are lots of coaster holders but not designed by me ;-) I made this holder specific for the smiley coasters. Diameter of the coasters is ø85 mm and the tickness is 5 mm, should fit 6 coasters.
Coaster Holder.stl does require supports. Coaster Holder no supports part 1 and 2 do not require supports, only a little bit of glue afterwards.
Coasters used:
https://www.prusaprinters.org/prints/58238-coaster-smile
The author marked this model as their own original creation.