Well, I wasn't at all sure this would work, but my sigil hats are a rousing success! *bounces around the room* I found some no-sew iron-on stuff and it works like a charm. (As I may have mentioned before, I Can't Sew. ...If I ever make a craft blog, that will be the title. XD)
Decepticon hat - real mechs wear pink! Autobot hat, with bonus Bumblebee wristythingies. It says something that I'm willing to overcome my instinctive 'oh god I hate pictures of myself' reaction to post these. But at least you all can see how long my hair has gotten.
Now I'm making some Decepticon wristies, with a cable. Mwahahaha. >D *mad yarn scientist!*