pfft, you can Macgyver that into an assault rifle
Cut circular, pen-sized holes into the CFL pass. Cover opening of mug. Disassemble cell phone. Remove caps from pens. Cut battery into individual cells. Use chemicals from one cell to create explosive mixture with pen ink (details withheld to prevent copycats). Wire pen tips to remaining cells and power switch of cell phone. Insert into mug through CFL pass holes.