I love to dye yarn with Kool-Aid!!
Why? It's super easy. If I'm in the mood to quickly dye some yarn, but don't want to pull out my professional acid dyes, I just reach for some packets of Kool-Aid.
They are color fast and food safe so you can use whatever pots and pans you have in the kitchen. No special equipment needed. Plus, it's lots of fun for kids to do!