I liked the idea of being a slot machine but I wanted something that would actually work. I made the box out of insulation board which I then covered in aluminum shelving paper from Lowes. I ordered actual slot machine reel pictures from eBay which I put on plastic cylinders I found. The wheels spun on a metal rod. I also found refurbished slot machine buttons on eBay as well. I used lights behind the pictures to make it appear that they were glowing. I made the handle out of PVC and a red ball. I kept the box even on my shoulders by using suspenders. I used small portable speakers to play the slot machine music when people hit the buttons.
I printed out the graphics on transparent sticker paper to it would blend into the ‘box’ part of the costume.