Haakaa シリコン シップ・アンド・スナックカップ 8オンス

Used it as a snack cup for cheerios on a stroller walk and barely any spilled even when my toddler tipped it sideways. The spill-resistant lid actually works, and washing it is a two-second rinse since nothing sticks to the silicone.

The silicone is soft enough that my daughter can actually squeeze it open herself, so she's finally feeding herself snacks instead of me doing it. The spill-resistant top really does slow down the goldfish crackers when she shakes it around. Happy with how easy it is to rinse out too.

My toddler throws this cup off the highchair constantly and the silicone lid keeps the crackers from ending up all over the floor. The soft silicone body is also easy for her little hands to squeeze and hold.