Star Wars Lightsaber popscicles: 2010 - ThinkGeek
This is another April Fools product that made it to production, but I think in this case we were planning on doing that anyway. It was an unusual challenge combining cold, syrupy liquid, and electronics in the same project, but we were able to separate the main components with some nice screw-mount drip guards. This also helped reduce the overall height that needed to fit into your freezer.

Star Wars Glowing Lightsaber Ice Pop Maker $34.99