I just did one with funky tumblers as an I spy (with no two fabrics the same). It's the tumbler shape which is not the same as tumbling blocks. I did them without any sashings inbetween so funky fabric next to another funky fabric. I wish I could figure out how to post pics here but alas I'm technologically challenged. But it's really funky because the shapes go one up, one down and it's pretty different looking when it's finished.