A fun experiment combining simple electronics and common food stuffs. You'll need 4 cups of sugar, 2 cups of water, wire, electrical tape, assorted LEDs, paper cups, wax paper, a stove and a medium sized pot!
Step 1: Preparing the Sugar Syrup
Boil the 2 cups of water in the medium sized pot, adding the sugar 1 cup at a time and waiting for it to dissolve. It's important to keep stirring the pot and not to let the sugar cook too much or it will burn.