I tend to be the only person in my house who enjoys wine, but I rarely like drinking an entire bottle in one sitting. Do any of the "sealers" on the market actually work? I'm not expecting anything to keep an opened bottle fresh for days on end, but it would be nice for a bottle to last for at least a day or two. Any suggestions?? I've tried searching this board with a variety of combinations but haven't come up with anything - my apologies if I just missed it.