From time to time, crates drop from the sky to aid you in victory.
Flying an RC planes into a crate will also collect it.
Collecting a crate while using the Blowtorch is possible, but dangerous. If you run with the flame directly into the crate, you might cause it to explode, but you might manage to collect the crate if the flame is pointing somewhere else.
All health crates will also cure the collector from poisoning.
Crates in the environment
All crates can be destroyed by explosions. When destroyed, they will burst into a ball of fire.
Crates can be frozen by the freezer. In frozen state, the crates can not be collected by hedgehogs anymore.