From Lube Sheep comes these two very hard to find child size plastic or polypropylene-I don't know what actually- drinking cups with handles. Measure 3.25" high, they each hold 250 ml or 7 ounces comfortably. I used water to measure. Each cup weighs only 1.5 ounces empty, so perfect for small or unsteady hands.

Blue one has dragonflys and the words U Ra Ra. Red one has what I think is the red rabbit with the words U Ra Ra. They are in excellent condition with no cracks. The inside bottom has swirls which could be stir marks or could be from the manufacturer's design, as there are none on the inner sides. Some slight wear or shelf marks on the outside if you look very closely and hold them just so in the light.

The bottom has Japanese writing so I can not decipher that. Thanks for looking at these fun little cups, which by my searching are extremely rare.