A festive drop-in pop-up party where all-girl choir Gaggle are on the decks and there are games, crafts and more at Etsy's grotto. Guests, we're told, should bring along unwanted gifts, no-longer-needed knick-knacks or homemade items that will be re-packaged and re-distributed via a massive pass the parcel game, where you can gain a new present for under the Xmas tree. There'll be vintage magazines and newspapers, wool, fabric and more on hand to create bespoke gift tags and wrapping paper too. The best bit? It's completely free!