In 1948, Idaho state government began dropping beavers out of planes in an effort to relocate them. This was done in order to create vital wetland ecosystems, but to also prevent them from flooding areas and damaging structures if they built dams too close to people.
Rather than transporting them over land, which could take days and be stressful for the beavers, parachuting them in was much faster. To ensure the beavers did not escape, a wood box was constructed with suspension ropes looped through the top and bottom to hold it together. The box was then affixed to a surplus WWII parachute. Once the beaver landed, it could easily push the lid open and climb out.
While this may seem like a questionable method, it was successful in relocating the beavers.