You can't light paper towels with a car battery. まほ~
Dig up a small hole then fill it with crumpled paper towels. Rig up that hole with insulated wires. Get a car battery and connect the wires to the battery when they arrive. The paper ignites. Instant smokescreen! :D
Then it burns up and the jumper cables touch together causing a short circuit and making the wires catch on fire/melt like crazy.