There is a program called Chemo Angels that helped my cousin's 3 year old daughter last year while she was going through treatments. She sent me an e-mail and said they are very short on volunteers. If you or someone you know is interested in helping there are many ways to get involved or they could also you donations. I believe there is also a Senior Angels program on the same page if you are interested in helping a senior citizen.
Here is a short description about the program taken from their web-site http://www.chemoangels.net/.
"About the program...
Chemo Angels is a volunteer organization dedicated to adding a ray of sunshine to the lives of those undergoing IV chemo treatment. We believe people going through the physical, emotional and mental rigors of chemotherapy deserve some encouragement. Many of our Chemo Angel volunteers are cancer survivors themselves, or people whose lives have been affected by cancer in some way. Our common denominator is a desire to brighten the lives of cancer patients while they are going through this challenging time."
Thanks for your help and support!