These are coasters designed to fit 83mm mugs like the ones shown in the pictures. I have included a holder to fit the coasters and and an attachment to fit drink cans. They come in eight shapes including hexagon, window, triangle, bubbles, five bars, minus, star, and circle.

this is the version two of the mug coasters that I uploaded a few weeks ago and here are the
things I added:

• six new coaster designs (along with the two in the previous version)
• an attachment that allows them to hold 330mL beverage cans
• a holder for all eight coasters

the v1 can be found here:

https://www.thingiverse.com/thing:6385340