Jack Cheng points out that we all spend more time dreading the items on our To Do lists than it would actually take to complete them (guilty as charged). He decided to increase his own productivity by doing something about this. His solution - time tagging his To Do list. For each item To Do he writes down, he adds an estimate of how much time it will take to complete. That way when he has 20 min free, he uses is to complete a 5, 10 or 15 minute task, instead of avoiding the list all together.
I like the thinking behind this idea. It is simple, with just the right amount of responsibility and guilt built in. I'll try this out and let you know how it goes...