I've been reading Steve's posts on box drills and last night tried shuffling sequences with Thommo. It added another element to the session in that I had to really work out how to handle the sequence the cards devised for us. I enjoyed it, and I think it was more like a game than a drill for Thommo too.
However sometimes I do want to practice a particular handler movement, and for this I have some set sequences using the double box. These come from my notes from a Greg Derrett seminar, so there is a risk that I have misquoted or misinterpreted. The usual consumer cautions apply :-)