I dyed some yarn!! With teabags!! As you can see it sent the cream Cygnet DK yarn a lovely coppery colour. I'm really pleased with it :) Word of warning though. If you do a test batch, make sure you do it with the yarn you intend to dye! I did a very small test batch using the Excelana 4ply, and it came out a very lovely autumn yellow. As you can see, the Cygnet came out far from a yellow! Luckily, I love this just as much as I love the yellow. Just be aware that it might not come out the same colour on a different yarn.
I followed this tutorial. My test batch came out a similar colour to hers. The great thing about dyeing with food stuffs is that it's safe for your pans! The tea stained my pan slightly, but it came straight off with some magic eraser :)
I've dyed a second skein and intend to dye two more. It should be enough to knit the Peaks Island Hood from Whimsical Little Knits 2 :)