When a bottle of wine isn't enough how about a keg that has 26?
An American company is now selling kegs of wine in different varities like rosé, Merlot,Sauvignon Blanc, and Chardonnay. You'll be sorted for any Summer get together.
Each keg costs $240 which works out about $9 per bottle which is fairly cheap. Obviously if you're not in the States you may not want to fork out for the postage fees, but fingers crossed this wizardry rolls out to wineries elsewhere.