I'm working on a series of chemo hats for a friend of Mama's. The first two experiments were way too big, but I think I'm getting the hang of it. Even though I've knit many hats, most are wool or wool blends, and that won't do for this lady who is in Texas where it is already hot. (Though with AC on, she does need some warmth and lots of breathability.) I've just knit the Head Huggers No-Hair-Day Hairy Chemo Cap .
Tom is in Boston for his infusion, so I'm discovering the joys of trying to take a picture of the back of one's own head. The hat fits snugly and is very light weight. It didn't use anything close to a whole skein of yarn (so I wonder if I did something wrong. Do you suppose the yarn was supposed to be doubled?)

And a close up of the top
I'll wait for feedback on this one, but I certainly have enough yarn leftover to knit it again - either single or double strand. It goes quickly!
The chemo hat project series showed me that I was woefully short of 16" circular needles. I particularly like the Bryspun Flex ones and have gotten sizes 2-9. I'd always thought I'd never use any circs but Addi Turbos, but the Bryspun's are easier on my hands, particularly in short lengths and I love the shape of the tips.
Off to contemplate the next hat!