As an adult, many years later, one Hallowe'en, I needed a costume I could put together in a matter of a day or so, yet still meet my need for it to look like I put in an effort! The theme of the Hallowe'en party I was going to was "The 80's", so at first, I thought: "Pac-Man". But, then, the more silly side of me said: "No, Pac-Man MACHINE!".
While photos of much of the build are lost to history, I can take you through how the costume was made and with what materials.
Step 1: Building the head piece
I then went online and did a search for the Pac-Man arcade machine header (or marquee) and found several that I could print on photo paper with my colour printer. This would be glued to the front of the head piece.
(In a later generation of this head piece, I actually created a compartment behind the marquee where I put a small, battery-powered LED light bar I bought at a dollar store. I then cut a hole in the front of the box, leaving enough of a border of the Pac-Man sign to be glued to. The idea was to light up the marquee just like the actual machine marquee would have been.)
Inside the box, I simply used a cardboard ring to fit my head, glue it in place and it allowed the head piece to be worn like a hat. (I could have come up with something more elaborate like using a helmet or something, but this had the advantage of being free...)
I then added a quarter (remember that's how you let it be known that you were next to play the machine) to the marquee as an extra detail.