I go with devices that can be charged off of USB too. 95% of my travel is business related, so my laptop is with me to act as the charging station along with a mini usb cable or two.

My trip this week is vacation, so I will not be taking my laptop. My cell charger has the mini-usb plug on the end, so that can be used to charge my MP3 player too. My only other device will be the digital camera, and a nice feature of my Canon camera is that the charger is tiny and the prongs fold into the back. The camera also has a mini usb, but I don't think it can charge from it.