I've been using a process with both group, couple, and individual clients that seems to work pretty well. I stumbled upon this, but I'm sure it's been thought of before. If someone has refinements, I'd love to hear it.
I've been using the back of old business cards to conduct a chain analysis of behaviors with clients. Business cards seem to be just the right size for this, as you can't really put much on them. I have the clients write down all of the pieces of the situation, behavioral chain, what have you, and then they lay them out.
The cool thing is, sometimes they'll lay out two cards that seem to have a lot more to them, and I can challenge them to make sure there's no more steps. For example, my mother calls me on one card, I want to die, on the next. We can tease apart all of the behavioral steps in the chain, group different parts together, shift them around, add new or different steps, change the order. It seems to work pretty well for defusion and self as context.
At the end of the session, clients take their business card chains home with them, and bring them back to session the next time. We talk about walking even with the cards in their pockets.
It's fun.