I have created a 6.5" crazy block... and am happy to share it with you!
This is to go with my attic window blocks which I can't show yet because they are a part of a block swap, but you'll be able to see that soon.
I've traced the pattern on to heavy-weight interfacing, which will be the block foundation.
White, Cream and Light Blue
A great suggestion from "KS":
This could be a "stained-glass" window block, just add black for the leading. I love that idea, actually!