Chemo Hat Patterns:
Most of these links provide links to other sites where the patterns are located and some hats will be listed on several different sites, but check them all because youll pick up different hints and info and some unique patterns on each of these sites. http://www.knotsoflove.org/?page_id=49http://www.headhuggers.org/patterns/patterns.htmhttp://www.brimmingwithlove.com/patterns.htmlhttp://www.bevscountrycottage.com/cancercaps.htmlhttp://www.chemocaps.com/page3.htmhttp://bluebettyblog.blogspot.com/2009/11/give-hoot-beanie.htmlhttp://mathomhouse.typepad.com/photos/chemo_caps/pink_ribbon_bbcdotcodotuk.html
Lots of hats. Some are labeled chemo hats. Any non-lace hat pattern will be fine.http://www.knittingpatterncentral.com/directory/hats.phphttp://kisknit.wordpress.com/2006/09/12/kids-knit-hat-fo-pattern/
These patterns from Lion Brand may require you to open a Lion Brand account. If you knit or crochet and like free patterns, open an account. Lion Brand probably has more free patterns than any other one source. Accounts are free and Lion Brand doesnt annoy you.http://cache.lionbrand.com/printablePatterns/kff-chemoCap.pdfhttp://cache.lionbrand.com/printablePatterns/kfancyf-chemoCap.pdf
If this link doesnt work, go to http://cache.lionbrand.com/
and select patterns at the top of the page. The site will tell you if/when you need to set up an account.
Dont forge to check all the yarn manufacturers. These are some of the more popular manufacturers, but thre are others:http://www.redheart.com/http://www.bernat.com/http://www.caron.com/http://www.patonsyarns.com/http://www.berroco.com/pattern_library.html
Crystal Palace Yarns: http://www.straw.com/cpy/free_patterns.html
Almost all will list some hats as chemo hats, but again, anything without holes is probably suitable. Dont be afraid of a funky looking hat, it might be just what someone needs to brighten their day. If you have a college nearby, do one in college colors because someone will appreciate it.
Ravelry has 6 pages of free hat patterns listed as chemo hats. You have to set up an account (free) but there are free patterns of all kind on Ravelry. When you do a pattern search on Ravelry, you can limit it to free patterns. You can choose knit, crochet or both. This is the Ravelry home page: http://www.ravelry.com/
Pattern search page is here: http://www.ravelry.com/patterns/search#sort=best
You want to set up accounts at Lion Brand and Ravelry for certain. Any other yarn manufacturer site that requires it, set one up because you will be rewarded with access to many patterns of all kinds. All of them are free and they don't spam you unless you ask. They have newsletters you can choose to receive and if you knit or crochet, they are helpful.
Another site with a lot of patterns, free and 1.99 down-loads is: http://www.knitpicks.com/knitting.cfm
All of the above sites have hats. The sites at the top of the list are dedicated to chemo hats. The remainder have a lot of hats of which many or even most are suitable for chemo hats. Don't restrict yourself to just the hats labeled as chemo hats.
Here is a fun hat: http://www.taskoman.blogspot.com/
A version for children is here so you have some alternate ideas on how it can look: www.sheepsclothing.com.au
or here: http://chileconyarne.com/freebies/cupcake-hat
One of the charity sites list a Christmas Tree Hat for children but it could be adapted for an adult.
If anyone knows of additional sites, please share them.