I adore the Attache case in Resi 4, and stuffing it full to the brim with bullets and herbs. It's not quite the same when you don't get to use all the stuff in the case, but the puzzle of flipping guns and eggs around to slot into place Tetris-style is very satisfying, and they manage to throw in some nice twists on the formula for satisfying puzzles. Not really very challenging, but a nice short length, beatable in a couple of hours.