Would these be of any use?

[Ozzfest05]

http://london.kijiji.ca/c-buy-and-sell-art-collectibles-Guinness-Beer-Kegs-Empty-aluminium-make-an-offer-W0QQAdIdZ323481929

Just wondering, going through the local ads as usual.

 

[day_trippr]

You'd need a "U System" keg coupler, which is rather unique (afaik only a few Irish companies use them) to use them as serving kegs...

Cheers!