For a change of pace, here are a couple of inventions that make unconventional use of model rockets. These definitely violate model rocketry safety codes! Definitely not for casual hobbyists.

3,787,013 September 3, 1972 James H McKenzie Sr. - Foldable Kite and Rocket - launches a kite with a rocket, and the rocket reels out the kite string.

4,653,379 March 31, 1987 Louis Barret & Andre Eybert-Berard - Use of a model rocket to trigger lightning flashes - The model rocket reels out a ground line.

Dwayne Surdu-Miller
SAROS #001