Please donate your old mobile devices

I am looking for old SMART phones. The phones do not need to have an active plan, I just need the camera to work and to be able to connect to our wireless network. 

I would like to teach our older students how to create QRCodes and then create scavenger hunts for our younger students. 

This code was made at QRVoice.net and will read the message in a synthesized voice. Scan it to hear the message. 

Please be sure to also include the charger if you have it. Let me know if you are interested in helping me or a class with this project.