This is my husband in 1984. He had to spray his hair gray way back then! Here’s how he made it:
The top part is built on the frame of a backpack – the kind hikers use, not a book bag dealie.
He fitted a long sleeve shirt over the frame, stuffed it, attached a full-head monster mask, slipped a long black robe over the shirt, attached huge monster hands to look like they’re holding the red box, which has a hole cut in it to fit your head inside.
You’ll need to wear another long black robe and keep your arms hidden. Wear the backpack as snug as possible to support the weight of the stuffed monster. Tie a black cape tied around the monster’s neck to conceal the backpack and pin the cape to your robe. Voila! It was about 7 feet tall and a real-attention getter.
If you make one of these, I’d love to hear how it turned out.