I just had to say how great these silicone flexible measuring cups are for kids to work with.
(OK, its true, I'm a big fan of most silicone baking tools, but this one's special...)
Kids can get a good, fun, bendy grip and measure and pour away.
Flexible Measuring Cups, Ken LeVan, 2008
Made of translucent silicone, these nested measuring cups allow you to form a spout anywhere along the flexible rims for precise pouring. The textured surfaces provide a secure grip, and two clear measurement windows allow you to view the contents. The large size may also be used as a mixing bowl. Microwave- and dishwasher-safe. Set of three. Capacity: one, two, and four cups.