You haven't lived until you've used packing cubes for travel.  No more suitcase excavations trying to find socks or undies.  I just pull out each bag and get what I want.  Sometimes, I pull them out and put them in the hotel room's dresser if we're staying for a few days.  My tip would be to NOT get ones the same color as the interior of your suitcase.  Get some in a contrasting color so they are highly visible to you.  Make sure you zip them up after you get things out of you risk the big dump.  My husband keeps not using his and then we get on a trip and he almost always says, "I really should use packing cubes like you do."