I bought a skein of Lion Brand's Fisherman's Wool to experiment dyeing with kool-aid. It's 465 yards of pure virgin wool and since it's natural fiber, it's perfect to be dyed. By the way, the kool-aid makes the house looks so sweet, it's wonderful!
I started by wrapping the yarn around two chairs, then I tied them so the yarn wouldn't get all tangled up.
I put the kool-aid in maser jars and the mason jars inside of a pot with about an inch of water. Make sure you don't fill up the mason jar to the brim otherwise it will overflow when you put the yarn in.
Then put the yarn in the mason jars, brought the water in the pot to a boil and turned the heat off.Wait until the yarn cools down (if you go from hot to cold quickly it will felt the yarn) to rinse it, then gently squeeze it to get rid of the excess water and hang it to dry.
My piece of advice: use gloves, you really won't want to have stained hands like I do. ;)