1. Lighting the road on fire (using a combination of gasoline, diesel, and other flammable materials) because we thought it would be "funny" to see the shock from drives when they saw a wall of fire on the road.
2. Making our own homemade pipe bomb that blew up my friend's treehouse.
3. Going egging and then leading a high speed chase running away from someone we egged, driving 90 mph through a residential neighborhood (got pulled over by highway patrol. THAT was an interesting conversation with the officer)

Many more, but one of my friends later joked that I must have had a whole team of guardian angels assigned to me, because with the stupid stuff I did, I should have died multiple times over.