Here is a quick tip about a piece of gear that should probably be in everyones camera bag. I have seen rocket airs before but never have I seen one with a filter built onto the bottom so that it filters the air it is sucking in. But also a valve on the inside that does not allow air to be sucked back in the nossele.
An air blower like this is good for cleaning partciles off your lenses as well as if you ever need to clean dust off your sensor.
It is amazing what a $15-20 item can do and the fact that it does not take up a lot of room in your bag is another bonus.