Reddit reviews Balls 4.5" 2/Pkg: White

The eyes are a "smooth Styrofoam" ball cut in half with the bottom rounded in to match the contour of the ball. I wanted to do Acrylic and try my luck with some lights, but apparently acrylic balls are hard to come by in Canada (US stores wont even ship them). I tried doing glass, but it just shattered when I cut it :(

I did the felt in quadrants, so they were smaller pieces to deal with and easier to stretch. I learned this method from this guys tutorial.