Flying Leonard, Hidden Tent (as suggested by Wanda)

A few years ago at our house in Chelsea, Leonard had decided that he wanted to get something to cover at least part of the patio in the back yard. We found a nice patio tent kind of thing that was basically a structure with four L-shaped poles connected together at the top like a pyramid, covered with canvas and surrounded by mosquito netting. It was "anchored" to the ground at each corner with very large rocks.
It lasted for a good amount of time, but we get good storms out here sometimes, and with them, big gusts of wind. One day the strong winds rattled the canopy until it came loose from underneath the rocks and began to move ominously. When Len went out to see what was going on, even stronger winds started to carry the whole thing away. He grabbed on to try to keep it in place so it wouldn't fly away and do damage elsewhere, but eventually the wind was too strong and pretty soon he briefly went airborne. After he was forced to let go, the tent continued on its way for a while, crashed to the ground and ended up in some far corner of the property. Leonard was fine despite his brief foray into parasailing.
We've since begun to appreciate our covered porch more.