This design features two compartments to hold pens and pencils to organize a desktop. It features two seperate components- the main piece consisting of the block with the empty slots in it, and the 36 small colorful squares that snap right into the slots without glue. When printing, I used red, green, blue, and yellow PLA for the squares and black for the base. Surprisingly enough, I was able to print the overhangs of the base without using any supports.