Mayo for handcleaner??? Gee, I love mayo. And just last night, I learned that 'mayo' will be a new entry in the Oxford English Dictionary! Right along with 'pistol' which is sort for 'pastrami'. (You gotta go to a New York Deli to confirm that one!)
Anyways, I couldn't find a decent link with lots of homemade / household remidies. As with anything that you're not familiar with, it's best to keep in mind that SOME remidies could be dangerous, especially for children. So I say to that: Use at your own risk.