Matryoshkus, or nesting dolls as they are often known make some pretty cool toys for small children. The trouble is that they are not educational enough. Art Lebdev studios has fixed that problem and created a set of Matryoshkus that teach data block size terms, from the smallest bit up to a terabyte.

I know what you are thinking, “What, no petabyte?” By the time my boy is all grown up, you can be sure that HDD sizes will be getting up there.

Price: $35.56