OXO TOT Plastic Baby Blocks Freezer Storage Containers (4 OZ) - Pink
Portion, store, freeze, heat and serve home-cooked baby meals
Baby Blocks are airtight, watertight and leakproof for safe storage and spill-free outings. Blocks fit into the freezing tray, and multiple trays can be stacked to save space in the freezer. Clear lids and bodies allow you to see what's inside, and measurement markings make portioning a breeze.
I use these containers all the time. Easy to clean, and no risidual smell after washing them.