The market is filled with gadgets and gizmos for extending the life of an open bottle of wine. But sometimes these contraptions end up in your drawer of forgotten doohickeys after the rush of novelty wears off and the disincentive of inconvenience kicks in. But don’t let that stop you from doing some comparative contraption testing of your own. Find out what works the best for you and your budget. You might discover that the more prosaic solution will offer the best all-around value in both cost and convenience.