I was in the middle of a frittata and the book just didn't have room anywhere on the counter. Then I realized that the dish drainer was actually the perfect size, shape, and form to hold an open cookbook. One quick dry later and ta-da! Cookbook propped up perfectly.
That's just my kitchen - but it seemed to make the best of limited counter space and a sink that doesn't have room to leave the drainer inside. (It's still a great sink - very deep and wide - but has just a single well. No double sink for a drainer.)
How do you prop up your cookbooks? Do you have a safe space out of the way for them, or do you let them sit right next to the stove and splatters?