Step 1: What you will need
*Round coke bottle
*Switch (I prefer the 1/2 inch push button)
*Button battery with case (small size)
*Soldering Iron and Solder (mine is taped together for this instructable)
**The cost of the materials was about $3.00 not including the coke bottle. If you order the materials off of the internet, it will cost a LOT less money.