I saw Joel's video and really liked the design but don't have a dual extruder and I can't seem to get the stopping mid-print thing to work.

Others have remixed the original into stacking layers but you can see the red, black and white on the side so I basically sliced up the original to use the red as the front and outer rim, with the black section sitting inside this and the whites of the eyes slotting into the spaces in the black disc. I had to tweak the white and black and print a couple of times reducing their size a little due to the low tolerance in my printer, as well as using a small file to get the eyes to fit snuggly. Everything was glued together with superglue gel.

I also reduced the overall size by 50% to get badge sized versions, which works well. I might use these as fridge magnets with some rare earth magnets glued on the back.