Dye wool yarn with Kool Aid. A fun, fragrant project to do with kids you can trust to stay away from hot solutions and hot yarn. You can use food coloring instead of Kool Aid (but won't get the nice smell), and it also works on silk fabric.
How To Dye Yarn In Microwave With Kool-Aid Or Food Colouring
A tutorial for dyeing your own yarn using Kool Aid! Yes, technically, this is not about knitting so much as it is about dyeing. When I set up a board dedicated to spinning and dyeing, then I'll move this pin!