For the unusual switch assignment, I have decided to utilize a keychain and a shot glass to create an unusual switch. The idea is that you signify that you are done drinking by closing the shot glass with the sombrero keychain on top. Because both items have conductive materials, the LED turns on after the shot glass that is connected with a jumper wire touches the keychain that also has another jumper wire attached to it. The result can be seen in the video:
Although that is an extremely simple concept, I had fun brainstorming until I came up with this. The visuals are also not the most pleasing since only tape was used, but my main concern was with the concept itself.