The Giottos Rocket Air Blaster does not use potentially harmful propellents to blow dust off camera components...
Dust control is just as important in digital photography as it is with film. You still have to carefully clean the fronts and backs of lenses, and more importantly for Digital SLR owners, keep the inside of the camera particle-free too. The Giottos Rocket Air Blaster has become my gizmo of choice for blowing away unwanted dust.
Unlike with canned air, you don't have to worry about harmful propellents accidently spraying out onto the lens surface with the Air Blaster -- or worse yet, on to your image sensor (with disastrous results!). The Giottos emits a steady stream of pure air and nothing else. Its extra long red tip nozzle enables you to clean tight areas. And it even has feet so you can stand it on the camera shelf where it serves as a conversation piece when not in use.
The Giottos Rocket Air Blaster is available in a couple different sizes. They all work great. And if you're looking for an affordable gift for your favorite photographer, they cost only about $11 each.