Sometimes a crate is the best option for what you need to send. Crates are good because they offer protection on all sides and are used for a great amount of items that are simply not going to work on pallets. Packing and sending a crate is often easier and simpler than a pallet.
Packing a crate is very similar to packing a box or carton. They require the same precautions of rattle and movement as well as shock resistance. In most cases when packing and sending a crate they will need to be padded with foam pellets or something similar. Contact wrapping items firmly in newspaper and bubble wrap is also something that should be performed.
One issue people sometimes fail to consider when packing and sending a crate is the immense friction and rubbing that can occur. This is especially prevalent when multiple items are in the same crate. Simple the vibrations of driving down a an interstate highway can wear away paint and other things that might not be noticed when they are being packed and sent.