Where ever you bring your electronics to I would destroy the hard drives, throw out the cables, keep a phone or two as backups if yours break, and remove the hard drives from the computers. Your info is almost always recoverable.

Someone mentioned staples to recycle. This is true. They recycle it for you but are not responsible for your data that you leave behind. Sometimes staples will offer a credit towards other electronics. Keep in mind this does not count as a donation. - I worked at staples as a manager for years.

Donating to goodwill is an option. Once again your info is not their responsibility it is yours.