Beyond me -- I don't have enough knitting time as it is. I feel the same way about yarn bombing. But that's just me.
I'm with you, Amy, I used only cloth diapers. I am very much against disposable diapers, and I don't buy the argument from some people that it's really less expensive than laundry. People use them because they don't want to wash diapers.
I used them once a year when we visited my in-laws.