When Portland-based architect and artist Don Lee received his first iPad, he quickly lightened his daily load (sketch pad, chalk, paints) and used the tablet as a portable digital sketchbook and canvas. But something was off. "I found that drawing with my finger was awkward," says the RISD grad. "There was too much friction, and it didn't feel natural." After scouring the stylus market and coming up short, he developed the Nomad Brush, the best tool we've tried for painting, drawing and sketching on the iPad. The expanding line of brushes ($18-$35) have soft bristles that work on any capacitive touch screen device, including the iPod Touch, Android and Kindle Fire.