Kool-Aid Tie Dye Easter Eggs
Basically, two packets of un-sweetened Kool-Aid (per color) and water. Instructions on the link above. Reports are the scent fades (rats). Reports are also that certain colors work better than others, and that the eggs might taste like that flavor (sort of gross, depending on the flavor).
I haven't tried this one, but I have tie-dyed entire t-shirts and that works, so why not eggs?
