Add some mario blocks to your gridfinity collection 

I am just starting adopting gridfinity, and i love it.
I was about to print some yellow ones and it reminded me of mario blocks, so i needed a mario block to exist . and now it does :)

The white parts do not stick out, you need to glue them in
The blocks obviously need to be square shaped, so i made a 1x1 and a 2x2 version for now.

Hope you enjoy this as much as i do.