Here’s someone who integrated hundreds of five gallon buckets into an adobe-style wall around his house. This method would probably be a bad idea for a load bearing wall, but for something free standing like this, no reason not to!
See the full story at Instructables.
Update:
Watch our new Building with 5 Gallon Buckets video for more ideas like this.
That is pretty crazy. I’ve got to say I admire how focused you are on this one idea. The projects on my site are all over the place, although all have something to do with making stuff. Here’s a holder that I made for plastic bags: http://www.jcopro.net/2012/10/28/a-workbench-trash-holder-and-defense-of-plastic-bags/ – kind of fits your theme, if not technically a bucket.
I like your pallet workbench, I’m planning a pallet site as well after this idea is tapped out. It’s got a lot of mileage in it yet though.