It's amazing how much you can carry on a bicycle. In those far off, pre-car, pre-Vespa days of dwelling in Zone One I could bring home a weeks shopping on my bike. Rucksack on my back, newspaper down my jumper and carrier bags swinging from the handlebars. Easy. Beer bottles are hard work, though. Awkward shapes, hard to pack. Easy to smash - and they're heavy.
But look at this, from Etsy's Walnutstudio. A darn site more useful than its original purpose of carrying a bicycle polo mallet. A what?
(Thanks to my old friend Rubyspirit - creator of fine and unique jewellery - for the tip-off)