LOL! I love the biohazard hat! I have bobbins and although I bought them for crochet, I'm using them for beading recently. I use a really long thread (beaders die when they hear) and while I have no problem actually beading with it, if it's not coiled carefully when I put it away between workings, it'll tangle like crazy.

I like the colors in the heartbeat sweater. Maybe you could use elastic to pull up the edge of the angora hat? Or do a tighter border?