Fancy yourself as a bit of a Robert Langdon? Perhaps you think Dan Brown could have written a much better riddle (we do). Then why not invent your own cryptic code & make your next gift devilishly difficult to unlock. Just choose a secret word & follow the simple instructions & you’ll be able to turn gift giving or office parties into a Da Vinci Code themed event no one will soon forget, even if they desperately want to. Change the secret code as many times as you like; the five tumblers, each having a 26 letter alphabet, provide you with just under 12 million code possibilities. This will give you plenty of scope to come up with something a little more complex than A-P-P-L-E…