There is always something that can evoke memories of our childhood such as the following hopscotch calculator although it’s just a design concept.
Hopscotch calculator is designed by Vadim Kibardin. It measures 55 x 110 x 10mm, and consists of ABS plastic frame, rubber keypad, and 8-digit LCD screen. Of course, the most unique feature is the hopscotch grid that is composed of 9 number keys. Apparently you can play hopscotch on the calculator.
At present, they are searching for manufacturers. Perhaps we can see the hopscotch calculator on the market.