Thanks everybody for your kind words and encouragement regarding my son Timothy's lymphoma diagnosis and your hat ideas. His treatments have been going very well, though they are feeling a little like a nuisance since the hospital is 260 miles from home and we have to go once a week. Thankfully friends and family have been very generous and supportive. I found this hat pattern on Ravelry, called Swirl Hat. I made it with Kroy sock yarn on a size 3 needle.
Thanks again for your encouragement, support and prayers.