Thanks for the spam removal - this forum is one of the best I've seen for quickly getting rid of it!
I keep a red folder in my desk drawer, in front of my tickler file. I keep the support material for waiting-fors in there. For example, if I make a phone call and have to leave a message, I will put the supporting info in the red file. When I get a return phone call, I can quickly grab the info while we're saying hello and I'm prepared.