This translucent roughing cube is my favorite method of constucting packet tricks and gimmicked decks like: Invisible Deck, Brainwave Deck, Mirage Deck etc. In the long run you save a lot of money by constucting the decks yourself. But the best part is that you can put your ideas into practice and construct effects of your own.
With the help of the cube, you can make cards stick together in pairs. Whenever you want to unstick the cards, you put a litter pressure on them and they easily unstick in a smooth motion.