Y-Infinite / toy brick

The best toys are "90% child, 10% toy", meaning that it's lots of potential (not lots of bells and whistles) that makes the toy fun. Instead of only being good for one specific type of use, these toys invite open-
ended play which, consequently, encourages creativity. Each Y-Infinite has the same shape and any two Y-Infinites can be interconnected by the magnet on the top.
A single Y-Infinite may be very general, but it will surprise you when they are getting together.