I have determined that all we need for our frugal electric needs is a plug adaptor, not a converter or transformer. (We will have one laptop with dual-voltage charger, one digital camera with dual-v. charger, one phone charger with same).
I have the 2-pin flat plug adaptors that I have used in the past. But we haven't been to Europe since 2007, and even then there were some recessed plugs that were a bit tricky with the flat adaptor. I've seen this beefier one, with more rounded contours:
http://goitaly.about.com/od/travelpackingtips
/l/blelectricityitaly.htm
Should we get one and take 1 or 2 of each?