Aldi's generic diapers (Nanny's brand) are comparable to Huggies or Pampers, cost half as much, and have nice bland little designs, like bears and whatnot. Member's Mark, the Sam's Club diapers, same deal (the Walmart brands, Parents Choice and White Cloud, are not worth the cost of the materials that go in them). If you can find a GOOD generic, the generic brands don't pay for the licensed characters. Nanny's are my favorites.

One WOULD think the cheapest option would be nothing at all. I would never remember what characters went with what brand, I just remembered the color of the package (before I found generics).