Head Huggers is a great site,
with knitted, crocheted and sewn patterns - for adults AND children.

Here is a link that might be useful: chemo cap pattern page

My favorite is the "No Hair Day" hat. It's at the website Jane gave the link for. When Mom was taking chemo a couple of years ago I made her several of them in Fun Fur. She said they were so soft (scalp got tender) and airy so she didn't perspire underneath. And even though I made some of them in wild colors, every time she wore one someone thought it was really her hair. They thought she was a hip old lady.

here's another site that you can use - since it's from me, it is obviously for crochet caps!

Here is a link that might be useful: Crochet Cancer Cap Links

Here's a pattern for a funky knit hat.

Here is a link that might be useful: Hallowig

Thanks for all the resources! There are so many options...from classy to very funny. I know that Hallowig will put a smile on her face. The "no hair day" cap looks brilliant!

Off to the store!

Judy