Public Speaking Course:
If you don't want your audience to throw your handouts in the trash as soon as they walk out the door, concentrate on mastering the skills taught in your public speaking course. To make sure they don't get rid of it immediately, means you have to give them a reason to keep it. I manage to do this by pointedly adding important reference material on EVERY SINGLE PAGE of my handout. I always make the material in my handouts tailored to that specific audience.
The reference items I use might be web site addresses, important phone numbers, book titles, or even funny cartoons that applies to the audience's industry. Using what you learned in your public speaking course means you know that you shouldn't put information on the last page of the handout where that page can be torn off and the rest thrown away.