This may be useful to you, though I'm not sure it's quite what you're looking for. It's a book called Lessons in your Rucksack
by John Hughes. It's designed for teaching situations where you are expected to go into the classroom with absolutely nothing to help you out except your initiative and brain. I've had a look through it, and it seems to have some good ideas for getting by without having a nervous breakdown.
Here's a link to the publisher:http://www.keywayspublishing.com/style/ ... Itemid,30/
If you can do any photocopying, then I've got some free activities designed to be used for communication based lessons available for free at http://www.eltgames.com
Hope this is some use to you!