Because stuffing a bottle into your backpack just isn't classy: This leather wine rack affixes a single bottle to the frame of your bicycle. It's made by hand, uses antique brass fasteners, and is perfect for wooing your lady with some public consumption.
If you care enough about your wine to cart it around in a hand-made leather harness, it doesn't make much sense to consume it out of a Frisbee, but whatever. Etsy retailer oopsmark sells this fine product for $30 dollars Canadian. Here's the video.
Video: Bicycle Wine Rack