We love changing the crib sheets in our nurseries. Not the physical labor part. But the part where it changes the look of the room, especially when it's a small room. We like the organic crib sheets from Giggle.
The better basics line is made of 100% organic cotton. The orange striped sheet currently is our favorite - a blast of citrusy color to fight the cold weather doldrums. You can also choose from blue or pink stripes, or solids. Get them here.