Quick productivity tip (maybe just to myself :-). If you are a nomadic worker and change on regular basis from one work environment to another (coworking, business centers, office, home office, etc) and you run Win7, you can choos a very nice setting from the printer and devices menu : Manage your default printers. 

Doing this you can choose for each network you connect to the default printer you want to use, you will never send a document to the wrong printer anymore!

Source : http://weblogs.asp.net/lkempe/archive/2009/08/24/set-default-printer-per-network-on-windows-7.aspx