On one of my Yahoo groups Bev's-Charity-Challange we were asked to make just one hat on Christmas day. Since I was over at my son's apartment I didn't have a lot of yarn with me except what I was using for a couple blankets, this is what I came up with. It's a really simple chemo hat, very soft and, at least I think it is, very pretty. I made it in less than an hour and I'm going to give you the almost-a-pattern pattern. It's just too simple to call a pattern. I used a varigated yarn and somehow it just striped perfectly. I tried to do it again, same yarn, same hook, same pattern and it wouldn't do it.
Quickie Chemo Cap
You need to use a super bulky yarn such as Red Heart Baby Clouds or Light and Lofty. I used a size N hook. I do crochet rather loosely so you may need to make adjustments, also I have two N hooks that are totally different in size so yours may not give the same size hat. The one I made will fit an adult woman.
Ch 4 and join to form loop
Round 1: ch 3 (counts as dc) 15 dc in loop and join (16 st)
Rd 2: Ch 3 dc in same st 2 dc in each st till end and join (32 st)
Rds 3 - 8: Ch3 dc in each dc and join
Rd 9: Ch 1 sc in each dc
See how easy? If you want to make chemo hats and have some suitable yarn it doesn't get any easier or quicker than this.