piggy banks

left: BushkaBank S, M, L by Racheli C. Sharfstein for Studio OOGA (via Design Milk)
right: Piggy by Bruce Tharp of Materious (via Design Milk)

"Piggy is a set of two savings banks that nest together. The larger “momma” bank is for a child’s personal savings, and the smaller bank is for the child's charitable savings. Piggy helps teach kids about charitable giving, with the hopes of inspiring new generations of caring, sharing, philanthropic citizens." (more)