I wanted to turn Sneakypoo's Labyrinth Gift Box into a gambling/party game for the fundraising event we were hosting. The dimensions were changed to fit gift cards to local shops. Instead of using a plastic notch, since there was going to be heavy use of the item, I instead made it so you can screw in a 4mm machine screw that lets you reset the puzzle quickly.
I've printed this in both ABS and Taulman's Nylon Bridge material. Both turned out great and with some sanding work great.
1 x 4mm Screw
Solve the puzzle, get the mystery prize.
The bid. You slide your bet inside the box and get 1 minute for every increment you bid. You may not "add" to your bid after you start. - We did $1 increments. So $1 = 1 minute to try and solve the puzzle.
Adjust increments based off value of prize.
You don't necessarily need supports, but it will cut down on the sanding you need to do after it prints.