Assorted Mad Science Insulators

If you ever need your very own Frankenstein lab, you'll need insulators - Big ones, tall ones, little ones, yer gonna need lots of them, because what's a mad scientist without lots of electricity?
VERY IMPORTANT DISCLAIMER! I'm using these for decorative and low-voltage uses ONLY! I take absolutely no responsibility if these don't insulate you from a high-voltage shock. I would NOT use these with a Tesla Coil if I were you, other than as decoration.
The center hole in the "Mad Science" insulator is sized for a #4 screw.