Welcome.
As was mentioned above the best is to build them with a move in mind, also doing things like arials from wire will help.
A friend of mine packages his kits with ziploc bags filled with popcorn(snack on them while unpacking).
I have done something different, most of my kits are inside their own little display cases, got the idea from an old Tamiya publication that had plans to build stackable cases for Motorbike Models. As long as the kit is firmly fixed to the base and the box does not receive a rough treatment they should be A-ok.
At the moment building a lot of generic bases so that I can keep all my kits dust-free and protected from the kitten we will soon get.