This is not just the comic book industry person in me talking. Drawing for 15 minutes a day engages the creative side of your brain. Now, before you protest that you are not capable of drawing, I'm not saying you have to sketch like da Vinci, the king of all scribblers.... Just put a pencil to paper and let your mind go. It really is a skill anyone can do with repetition. Lyric Kinard is spending a year drawing faces so she can get better at them, and her blog frequently posts about her efforts.
The Zentangle craze has basically formalized a name for what I have been doing for years with my doodles. If you need some structure, maybe you can check out the many Zentangle resources online to get some hints.
Many of my quilts start out as tiny pencil sketches. I keep them in my sketchbooks until I'm out of creativity and I need something to work on. So when in a creativity rough patch, I get out the sketchbook and draw for 15 minutes at a time. Maybe you'll draw your next masterpiece.
Does drawing help you bust through a creative block?
PS: Don't forget to enter my giveaway here!!