Wooden crates are strong boxes made a bit larger than the item they are going to transport and inside there is some room for the appropriate quantity of packing. They are also weather resistant so whatever you place in them is protected from rain, drought, humidity and other bad weather that may damage your belongings.
These boxes are very strong and can be used to pack your electronics, artwork and fine art, furniture, inherited precious items, decoration, computer or other. Once you contact movers you can consult them which ones of your belongings will need crating and they can advice you. You have several choices you can make if you want to have crating when moving to handle your fragile or precious objects.
There are also standard sized plastic crates that you can rent. You can use them for other personal things at your home like books, files and shelves.