Vernier does not accept donations of old spectrometers. However, you can donate your old spectrometers, or other electronic laboratory instruments, to the non-profit organization described below:

Worldwide Lab Improvment, Inc,
3607 Gembrit Circle
Kalamazoo, MI 49001
phone: 269.323.8407
http://www.wwlab.org

Worldwide Lab Improvement refurbishes lab instruments and sends them to third world countries for use in field stations and schools. It is an extremely worthy cause and you can be sure that your old lab devices will be put to good use.