Our lighted Nativity scene displays are designed for easy setup and storage. All larger displays either fold smaller or come apart into sections. The LED Nativity Stable Hut, for example, does both.
The easiest method of storage is hanging the folded displays on the wall. Go to any hardware store's "garage organization" section, and you'll find hooks of all shapes and sizes. Make sure they are mounted into studs, as some displays can be heavy. With most solutions, you can hang several displays deep on the same hook, allowing more displays to be stored on less wall.
In the off-season, store your Nativity displays in a dry location and limit direct sun exposure. Check also for rodents and squirrels in the storage location, so the wires don't get nibbled while they are stored.