Combine this quick print with a cocktail stick, some glue, and a paper flag.

Stick up to six of them in your tildagon, you didn't need those slots anyway.

You will have the fanciest EMF camp badge ever.

Now that's what I call macaroni!

Instructions

Cut or snap the pointy ends off the cocktail stick off so you don't stab people / your badge.

If you're really fancy you can glue in the cocktail stick but it should be reasonably securely held by the compliant mechanism. 

Cut out a flag or design your own. Stick it around the cocktail stick with Pritt stick or similar.

Images of sample flags mostly free-ish but distributed without permission, get them before someone tells me to take them down.

The STL itself is derivative of the paper template here:

https://github.com/emfcamp/badge-2024-hardware/tree/main/hexpansion

via OpenSCAD, so is licensed under the terms of the CERN Open Hardware License (permissive) v2.