LOL I’m imagining a Psycho Beach Party style virgin sacrifice.
You could use sugar pastillage to make “obsidian” artefacts like those Macuahuitl “swords” or sacrificial knives…
I played a MesoAmerican-derived character in a LARP once, and one thing I did was make a piece of jewellery out of Daz clay - based on the Balam jaguar glyph, I did it in low relief then painted it gold with some feathers coming off the bottom. Lots of Maya glyphs lend themselves to that sort of low-relief sculpture, you could make several.
How about “Pin the Wings on the Snake” a/k/a Quetzalcoatl?
Get a kit and make some chicle gum.
Hmm. The Swiss have an odd idea about what the Mayans looked like.
Tamales and make the guests wear jade spools
Or just cut out the 22 on the December calendar and play “Pin the 22nd of December”…