Sippy cups are practically synonymous with leaks, but if stains on the carpet are not your cup of tea, you'll flip over the mighty big idea of Munchkin's Mighty Grip cups. Smartly designed with ridges and a contoured shape, these innovative training cups are leak-resistant and super easy for baby and toddler hands to grip. Never having to wipe up another puddle in the house, that's surely something to flip over.