I'm trying to come up with gift ideas in the $50-$100US range for my Mac photo buff father-in-law. He shoots with a Canon G9, and uses Photoshop and iPhoto on his Mac mini. He has a spider for calibrating his monitor (an old Apple 17" LCD). He's not a pro, just an enthusiast. Right now I'm leaning towards one of the small Wacom Bamboo tablets (maybe the Pen and Touch). He's never used a tablet, and only has an original 1-button Apple mouse, so I figure it'd be a huge improvement for Photoshop work. Are there any other good possible gift ideas in that range I'm overlooking?