When calling businesses or authorities nowadays, one seldom speaks directly with a live voice, but must first navigate a labyrinth of choices on several stages before finally often arriving at a dead end. This exercise could be developed into a tele-menu-maze challenge charging callers to try to get to the goal of a non-visible maze by choosing directions via the number buttons.

For example, “Press 1 to turn left, press 2 to go straight ahead, press 3 to turn right or press 4 to turn around.”
“3”
“Press 1 to turn left, press 3 to turn right or press 4 to turn around.”
”2”
”Press 4 to turn around”
…

Solving the maze might mean winning a small prize or no charge for the call or to allow only tenacious or intelligent callers to ring you.
-- FarmerJohn, Apr 28 2004

random, halfbakery