I'm building this portable corny kegger. I still need to add the beer line and faucet. My Perlick faucet for my Kegerator came in, so I'll be swapping that out and putting the cheapy on this gadget. That's a 3 gallon Spartenburg Corny in there.
It's an Igloo Extreme from Costco for $39.99 and it's tall enough inside to handle the 3 and 2.5 Gallon cornies while keeping the lid closed. It also has a retractable handle like a roll-on suitcase.
I'll be finishing it this week in time to tote 3 gallons of hard cider to a neighborhood brewfest. I'll post some pics on it afterwards and report on the performance.