One of my favorite PCs in a game is a gladiator who slew a mighty lich, and uses his (not quite dead yet) skull as a beer drinking vessel. To have some fun, I modeled and version for me to use in real-life during the games, as a beer koozie!

UPDATE - just added a split version of the small version so people with smaller print beds and lower Z height on build plate can print in 2 parts and assemble.

There's 2 versions here -the life sized one that is pictured painted and needs a large print bed to tackle (and takes multiple days to print), or a smaller one that can work on smaller printers but still hold a beer (albeit less impressively).

These do require supports to print - primarily on the bottom and a few on the sides - I actually had some trouble with layer peeling when removing on mine, but fixed with some hot glue & green stuff. I printed @ .2 layer height and 15% infill IIRC. Post processing and getting all the supports off was a bit of a pain in the ass, so be warned!

I finished with a coat of filler primer and painted with cheap acrylics (apple barrel + metallics).

If you like my free stuff on Thingiverse, take a look @ my premium tabletop models on Hero's Hoard and be sure to follow EC3D on Facebook!