Here's my first one D:
I wanted to make like a last quest in tibia, where you summon the hardest boss. In order to make this, you need to place: 1 orshabaal brain to the left (the sign reads: "The Wisdom of the Demon Lord"), then to the bottom the Morgaroths Heart (sign reads: "The Heart of the Triangle"), and to the right 100 demon dust (sign reads: "100 Pieces of his soul"), then you pull the levers, and the corpse in the middle disappears, and the teleport besides it appears. Then the final showdown! xD
awesome idea