I just wanted to comment on the topic of making bath time "fun time." My Grandfather used to refer to his morning toilette as his "birdie bath." He was meticulous about his grooming for all of his 84 years, but at some point the danger of falling prevented him from using the shower or tub. So instead, he'd fill the bathroom sink with warm sudsy water and then pull up a chair to take his "birdie bath."
The ability to manage his own personal care in this way allowed my "Uncle Jack," (as he liked to be called - because he said he was far too young to be called Grandpa) to feel independent longer. This routine helped to preserve my grandfather's dignity, which was extremely important to him, and to my aunt as well during the ten years she cared for her father in her home.