I've used this inexpensive ($30), small, light-weight yet durable and powerful hand held unit for a several years to detail my bikes. Works great and leaves one hand free to use a shammy. It has a pliable soft tip that won't nick or scratch your paint if you accidentally make contact. Everyone should have one in their garage/home.
http://www.amazon.com/Compact-High-Speed-Electric-Blower/dp/B00159X2PU/ref=pd_cp_hi_2
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