A police helicopter landed to ask a kite flyer not to fly his kite at a thousand feet Bristol high-flying kite enthusiast gets police helicopter warning - BBC News
Both air pollution and water as the turtles try and eat them and it chugs them upit will be don't let your helium balloon loose or you might get fined for it
Check out the "Tripoli rocket club" non profit organization, Tripoli.orgmodel rockets that my sons and I launch. Some of those go a thousand feet or more