Basically, while my uncle was in the hospital a nurse temorarily used a pee pad as a diaper while waiting for someone to clean his private regions.
I was thinking that this would be perfect for my grandma. The pee pad, if large enough would allow for more airflow to the skin, especially at night. I could hold the pad in place with this packing tape I have that is strong, but comes off skin rather easily if it should get on there.
I wouldn't use it all the time, just at night and sometimes during the day, if no one is visiting. The pads I use are cheap, but absorbent.