Saving a half bottle of wine

[Smurfette]

Is there any way to make a bottle of wine last a few days without losing ALL its flavor? I have heard of vacuum gadgets and gas gadgets but I would prefer a less technological method of enjoying an evening glass of wine. What do you all do? (without building a wine cellar & inviting the neighbors over for dinner every evening, of course [img]http://www.wines.com/ubb2/wink.gif[/img])