Stack, roll and stick this set of 6 colorful squishy cups. Made from food-grade silicone, these 2.5" H x 2.5" W. cups features a suction cup bottom that encourages stacking and sticking to any smooth surface.
These stick to the bathtub wall way better than I expected, even when they're wet. My one-year-old loves pulling them off and squishing them, and the silicone is soft enough that I don't worry when he chews on one.
My toddler spends a solid twenty minutes stacking and knocking these over, which is a miracle in itself. The silicone is soft enough that I don't worry when she chews on one, and they stick surprisingly well to the high chair tray.
I stuck these to the fridge while I was cooking and my one year old stayed busy the whole time. The suction bottoms actually hold, even on tile, which surprised me. Silicone is soft enough that I don't worry when she chews on them.