If you find yourself making drip coffee often enough that you find measuring out six tablespoons tedious, then this is for you! I'll make a pot of coffee for the office every day, and made this as an upgrade from our paper cup marked with sharpie.
I included four different models of different coffee strength levels! I suggest printing it out of a brighter color to see better contrast with the color of the coffee grounds and printing it straight upwards. I tried printing on the side to save filament during the color switching, but I ended up with some pretty marred surfaces and an absolute pain in the butt removing all the supports.
I printed the blue out of PETG originally for it's better resistance to soap and water from cleaning it, but PLA also seems to be working fine. Someone more skilled in CAD than me should make a version where the ridges on the outside are only on a small angle separate from the others, and the inside ridge is in the same spot so it's a bit easier to figure out which line is which without the extra lettering on the inside.
The author marked this model as their own original creation.