Good ornament storage keeps each piece in its own compartment so nothing knocks together. Count roughly how many ornaments you own and measure your largest ones before buying: most boxes list both the number of compartments and the size of ornament each one fits.
Hard plastic boxes protect best against crushing and damp, which matters in garages and basements. Fabric boxes with cardboard dividers are lighter and cheaper, and fold flat when empty. Adjustable or removable dividers help with odd shapes and large figures.
Look for strong handles, a clear label window and lids that latch. Stackable boxes save space, and some sets include trays that lift out so you can reach the bottom layer easily. Label each box by room or tree so decorating and packing away goes faster every year.
Wrap fragile glass ornaments in tissue paper inside their compartments, and store your tree in a matching tree storage bag.