LEGO and IKEA are very popular around the world. However, a child’s interest in a certain toy will gradually disappear. Blackants have found a way to re-make some outdated toys to make them interesting for children to play again. Their solution is to design an adapter plate with the same standard of LEGO to replace the adapter plate of IKEA. In this way, an IKEA toy car can built using LEGO blocks, changing the car into indefinite forms and making it more interesting. Hence, the old IKEA car and LEGO blocks are revitalized. The connection board is manufactured through 3D printing, with open 3D source files available to consumers