Ressources

Encre conductive DIY
DIY Conductive Paint for Makey Makey or Bare Conductive
https://www.youtube.com/watch?v=1-K5HBKun2M

Test Results:
Acrylic (plastic paint): Graphite by weight
10:1 = failure
3:1 = success (moderate)
2:1 = success *Paint became too thick

Tempera (water based paint) : Graphite by weight
10:1 = failure
4:1 = failure
3:1 = success (moderate) *surface is dusty and releases graphite

Glue : Graphite by weight
3:1 = success *slightly dusty surface but best overall medium to carry the graphite (most consistent results with varied application)