First: boxes. Don't pay for them! Cruise behind your local liquor store and scoop up as many as you can, but watch out for those pesky transient leavings!
Movers: Why pay for movers when you have parents who for some strange reason actually like helping you do people's most loathed activity. Repeatedly...and a lot.
Storage: Have too much junk and realize that you can't in
good conscience give the Goodwill anymore single shoes or broken coat racks? Those parents have a garage don't they?!
Lastly: Free advice. Have a good sense of humor, because if you
don't...you may lose it in front of those nice parents and start screaming about Rush Limbaugh or something weird.