My coffee tends to cool down too fast, or maybe I drink it too slowly. Whatever the case - this insulated sleeve helps.
It's designed to to hold 12oz "Tall" Starbucks coffee cup and fits into most cup holders.
(I could have designed it a lot thicker and therefore more insulated, but then you can't put it in a car cupholder).
Note that material you choose has to withstand temperature of hot coffee.
"... coffee are frequently served at temperatures between 160 degrees F (71.1 degrees C) and 185 degrees F (85 degrees C).", from https://pubmed.ncbi.nlm.nih.gov/18226454/
So no PLA - it will deform!
Thingiverse
https://www.thingiverse.com/thing:4670599
This is an ergonomic coin holder - coins are sitting at 30 degree angle, which makes them easier to pick out.
Designed to be put into Tesla Model 3 armrest top-compartment. The structure is angled 6 degrees so it's flush with the box wall.
Note that 2 versions are available - wider for the front of the box and narrower for the back wall
Thingiverse
https://www.thingiverse.com/thing:4580428https://www.thingiverse.com/thing:4580428
MyMiniFactory
https://www.myminifactory.com/object/3d-print-ergonomic-coin-holder-for-tesla-model-3-131671
Cults 3D
https://cults3d.com/en/3d-model/home/ergonomic-coin-holder-for-tesla-model-3