To secure cargo, shippers can use bracing and straps. Those require connection points, and take time to install. A far faster method is to use what are called dunnage bags. These come in different sizes and are essentially giant balloons, placed between objects and filled on-the-spot with compressed air.
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They prevent contents from shifting, are great for filling voids between irregular-shaped objects, and add practically nothing to the overall shipping weight.
Image: Astrid Groeneveld, CC BY-SA 3.0
They’re not just for large shipping organizations. Furnituremaker Matt Weber uses them to protect his creations during delivery:
Dunnage bags are sold everywhere from Amazon to Uline.
Source: core77