[freebeard]

I think I saw a video called something like "making graphene without dieing".

That would be Tech Ingredients. They used high voltage electricity IIRC. I'd much prefer Robt. Murray-Smith's. He uses a blender, whey protein as a surfactant and 10-20 micron graphite powder.

1933 Blood Graphene - A Way To Make Graphene From Blood, Eggs Or Milk

See also #1934-1935 and 1948. He can print graphene on Capton tape with a laser.