Back in December, I was on a camping trip in the Oregon woods. The fog had cleared for a short time, and I did some experimental sketching of the Douglas fir trees silhouetted against the night sky. Dilute white acrylic paint called out the faint glow of the sky in contrast to the shapes of the dark trees.
I printed a few variants on these, and they'll be wandering through the postal system over the next few days. My planetarium friend enjoyed her hand-delivered copy too--hers was extra special, with a hint of glitter. Yay.