Most of these, especially the ones with wall warts, should be 220V capable. Look at the writing; it should say 110-220V or some such. If everything is, all you need is an adapter. I carry a small multi-tap extension cord with me as well so I only need one adapter.
The continental European one is two round prongs, like this:
Go to the travel section in Walmart or Target etc... The plug in converters have slide out plugs that'll work in the different European countries. Easy to use...no worries.