Minimalistic coaster holder

For when the showing of coasters are more important than the holder.Easiest most simple way of gathering up the coasters when not in use. 5 different sizes spanning from 100mm down to 90mm in 2mm increments.Biggest version is only 17,5g's - Smallest version is a mere 12,7 g's Hight in all sizes comes in two variants:20mm - For holding (for instance) 4 x 5mm coasters or 3 x 6mm coasters30mm - For holding 6 x 5mm coasters or 5 x 6mm coasters