Coasters of Mangekyo Sharingans and Sasuke's Rinnegan.
I know there are more Mangekyo Sharingans, I will include them in a future update.
These coasters have 2mm high rubber feet on them. If you include the rubber feet it will sit flush with the coaster holder.
https://www.amazon.com/gp/product/B06XCNM69B/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&th=1