Vault 111 door coaster
Printed one of the other vault door coasters I found online and found that, while it did look great, the surfaces were uneven and all the detailing it made it preform poorly as a coaster. So I started from scratch and made a simplified version of it with all of the highest edges resting evenly at 5mm tall. It now preforms well as a coaster.
-around 4.75 inches in length
-can be easily stacked/stored
-currently working on a coaster rack for it, stay tuned.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/cC0dJvzfR9H