Dec 27, 2011 · Sippy Cups Sippy cups can be used as a transition between bottles and open cups—and they can minimize spills (unless your toddler unscrews the top). When you start using a sippy cup, use it for all liquids, including milk, right away, and then switch to an open cup (such as a 2-handled cup) as soon as your child can manage it, usually before ... "The Babies R Us Stacking Cups set comes with 10 pieces ready for stacking and nesting. Use the various shapes on the base of the cups for imprinting fun. Baby can learn so much through basic play, and these stackable, nestable, fit- together-and-roll-around cups offer endless versatility for lots...Import engine from japan.