Here are two files of drinkcoasters with the original Ninja logo.
These are two models, a ninja positive and ninja negative file. If you print it for a drinkcoaster, i would print the negative one. Cause that one provides more stability for your glass/cup.
...Ninja is a famous streamer living the gamer dream; he makes alot of money with streaming games (major game fortnite). But most important: he is a decent guy, like you and me.
Print it with a single or multiple color, with filament or resin..and show me what you guys have made of it (if you don't want to post a picture of your print it's totally fine)
Use this coaster to house your favourite drink.
This is a standard size coaster (100 by 100 by 5 mm), to fit in my coasterholder: