We recently purchased about 4500 ladybugs and released them in our garden. They eat bugs that are harmful to plants.
The kiddos loved opening the bags and letting them loose. That was until too many were crawling all over them. At one point, it looked sorta like a scary movie! It was impressive how quickly the bugs scattered.
For about a week after the ladybug release, we kept finding them in our house. In a drum, on the couch, in the shower. Each time, we dutifully made sure the ladybugs found a new home outside in our flowers.