64x Sharpie Block

I liked the little connectable sharpie holder lordmulgath made, but I have... A Lot of sharpies. So decided I'd make a nice little square so I can set it in a box or something and make them easy to deal with.

Edit 05/09/2022: Added a version with all the empty spaces filled. It takes more material but also prints faster because way fewer perimeter lines to drive slow on.