I bought one of the Dust Deputy doohickies and need a bucket to mount it to. I got the DIY version since the one with a 10 gal steel pail and casters is about $100 more. I was planning on using one of the Home Depot 5 gal buckets for 2 bucks, but I'm thinking that will fill up pretty quickly. Thing is, I can't seem to find anything much bigger with a sealed top that's cheap. Anybody have suggestions?