The Sharper Image Electronic Wine Preserver

One of my most used gifts ever.  Super easy use, just push it on top of a wine bottle and it sucks out the air, helping preserve the wine.  Even if the bottle is unlikely to survive the evening, this device is easier to use than trying to push its cork back into the bottle.

http://www.overstock.com/Home-Garden/Sharper-Image-Electronic-Wine-Preserver/9273709/product.html