Burnham
Woods walker
Nope.
What time frame would you want them to call you back?

Setting up a simple CRM, which can be done for free makes a huge difference in sales management.... I would be more than happy to share some of my experience with this stuff with any of you guys.
The only difference that I can see between here and there, is that people might look at you suspiciously, so you will have to come up with a good explanation as to why you are giving them a towel. Initially it might be a little confusing, "Oh why in the world would anyone want to give ME a towel, what did I do to deserve it???" I don't think it will be a very serious dilemma for them, and you can blame me if you get swamped with work. 
All you would have to say when people look at you quizzically, is they you give them to people that you meet through your work, something that they will probably find useful. It may not register at first, but when they look at it later it will, or go to use it. Enough about towels....
...for now.
