I carry a laptop in the plane (for JepView, IFR route generation, Logs, plates to airports where I hadn't expected to arrive, etc.). However, I also bought an iphone for briefings on the move. It is a bit more work than a proper laptop (some stretching and pushing to either see the whole context or enough detail to read) But - I can pull down the USAF OWS weather charts, Avbrief, the Metoffice, AIS for a notam brief and file a flight plan on homebriefing (slowly on the last one).
This means I only need to pop the phone in the pocket and I can get all of the info I need. If you can pickup wifi, it is fantastic. In your home country (UK for me) all the data over 3G is also free. However, unless you fly a medium jet, you will find the cost of 3G roaming in Europe is staggering (I think £10/MB!!!).