This one was my favorite back when I did it, and it's still my favorite now.
I started an Etsy shop, and I'm a little new to this, but it fulfills through Printful. If you want a print of this, you can head over to this little guy and slap your wallet a few times against the computer screen. That's how buying online works, right? https://www.etsy.com/listing/666723494/a-frame-of-mind?ref=shop_home_active_1