At www.turnphonesintoloans.org/, they allow anyone who has access to the Internet to get pre-paid baggies and make a difference for free.  After entering in your information, they send as many baggies as you want to your address within 3-5 business days so that you can in turn distribute them among events, in offices, to pass out, etc. Each person simply puts their cell phones inside a baggie (up to 5 per bag) and places it into their mailbox.