Buy the FOOT BOOK by Dr. Seuss. As you all know, Seuss was excellent with rhymes. A whole section of Gillette could easily do a Seuss foot chant.
Wet foot, dry foot
High foot, low foot
Back feet, front feet
Feet, feet, feet
How many different feet you [meet] -- change to "eat"
Slow feet, quick feet
Well feet, sick feet
Up feet, down feet
Here come clown feet
Small feet, big feet
Here come [pig] -- change to "Rex" -- feet.
His feet, her feet
Fuzzy furry feet
In the house and on the street
"Come see Rex if you like feet"