Vattentimer

The way it clicks as water flows through is oddly satisfying, and my kid actually gets how cause and effect works now. It's held up to daily splash fights without any leaks, which is more than I can say for other bath toys.

We've had ours in the bath every night for a week and my daughter still squeals when the little float rises with the water. It's a clever way to teach cause and effect without any screens involved.

The little gears inside actually turn as water flows through, so my kid gets to watch cause and effect happen right in front of them. Bath time has become a mini science lesson, and I don't have to supervise quite as closely.