I have been checking out cooler builds for about 3 years now. I have always wanted a way to take my homebrew on the road. I picked up a 75qt cooler from Walmart a few weeks ago and went by my LHBS with it. I was at my local guys store early Saturday morning before anyone got there. After about an hour it was all plumbed and ready to go. Alot of the ones I've seen use paintball parts, but I decided to go with 2.5 lb CO2 bottle. I wanted to avoid the adaptors and having to go to special places to have them filled, plus for me I'll get additional use of the 2.5lb bottle charging up newly filled kegs. I lucked out and got the regulator for $15 because it came from a nearby bar that just shut down. Click the three links below to see the pictures. Cheers!