Because of the way my 'fridge is configured, when I store a six-pack of beer in its vertical position, I can't pull out the back four bottles without hitting the bottom of the shelf above them. So I usually stack them horizontally, but the pyramid tends to slide apart when I remove a bottle. This is one of those minor life annoyances that I never gave much thought to—until I spotted the solution: ModeStudio's Fridge Monkey, a simple rubber mat that lets you securely stack both cans and bottles.
For the champagne and hard-liquor drinking set, a better way to keep that bottle icy without sticking it directly in a bottle of ice cubes is Drainscoop's Bottle Bucket, made from aluminum coated with acrylic.
I don't drink enough champagne to be irritated by trying to pour from a dripping-wet bottle, but I wouldn't mind using one of these to chill some gin.