egg carton clip for a visual as to which carton has boiled eggs.
"Boiled"
Instead of writing on an egg carton, why not just clip this Boiled egg cli...p on the carton?
It will clip on many styles of cartons and anywhere you want to clip it. Then simply post it to the fridge using the magnet using a 6mm neodymium magnet.
3d model print parameters
Should need no support if oriented correctly, and whichever material you like should be fine....