Okay so a while back I went on a Martinelli's Apple Cider kick [yes, like I am five] and I was literally drinking a bottle a day. Living it up! And I started gathering quite the collection of those little white plastic caps that come with you can save for later, which I obviously didn't need so I would just toss them in the drawer. Then came the A-HA moment!
Those handy little white caps fit most champagne and wine bottles. NOT all but most. And its way better than the cork and way cheaper than the fancy little gadgets you can buy. :)