K.R.
Check out http://www.discs4dollars.com They take old CDs and DVDs and give you cash for them. They rehab and resell them to keep them out of the landfills - and you get $$!
The site has letters that you can just modify and send out to friends, neighbors and families. You could even just have people bring their old discs to the other events that you have planned. They just need to have the cases and original artwork.
Good Luck!