These things have been standard fare at childrens’ museums and science museums since they were developed in 2008. I had seen them many times but didn’t know what they were called.
Unlike some other magnetic toys, these are perfectly safe for infants to gnaw on. From the website:
“Each shape contains rotating Rare Earth Neodymium magnets, the strongest of their kind for guaranteed connectivity. Every magnet is kept safe and secure in Sonic welded, BPA free, HQABS plastic. This process of manufacturing ensures each magnet is encapsulated with the utmost security, providing a safe, long-lasting play experience.”
We found a box of them on sale and gave them as a Christmas gift to our kids and they have become standard fare in our house as well. The kit is a set of squares and triangles and other shapes with embedded magnets that allow the shapes to snap together.
It is one of the very few toys that is enjoyable and usable by kids as young as 1 as well as older kids. The magnets snap the pieces together so the infant doesn’t get frustrated when stacking them. The toddler likes matching colors and combining to make more complex shapes, and the older kids can make much complicated shapes and objects.
Magformers has recently vastly increased the type of kits they sell, with ones that let you build dinosaurs or vehicles or robots. Some kits come with gears and motors and other parts that allow you to make functional machines such as a working merry-go-round.
Like Lego, Magformers are fun just to fool around with, and are also fun to use when following instructions to make pre-designed objects.