eturn borrowed equipment, clean up after the clean-up crew, and if any town or city employees are present, be sure to thank them again. They may have sacrificed a bit for your event as well. Make sure that all solid waste is placed where you told to put it.
Remember to take a photo of all the collected trash and to focus in on any unusual items. If all the trash will be placed in dumpsters or bags as you progress, you may have to take several photography tours to capture your results. If you have good quality photographs, try sending them to your local press. Or the smart phone crowd can tweet on the spot.