Oball with Rattle
This lightweight rattle ball is likely to be the very first toy your newborn will be able to play with.
When they’re too young to really be dextrous, they find themselves accidentally hooking their fingers into the holes and picking it up. This obviously gives them quite a kick as they can’t pick things up at this stage. Then they wave it around and it RATTLES! Then they accidentally leave go and it rolls away. So they go and get it and repeat, and repeat. At this point, even the most hard-to-please babies will be utterly addicted.
Even though our babies have (probably) outgrown it now, it’s hard to give it up. So it lives on, doubling up as a stress ball.