Non-profits began accepting non-cash donations in order to encourage donations by the middle class, rather than depending solely on cash donations by the upper class.  Overall this much more practical tactic has been a huge success.  Used cars are the most common articles donated, but really anything that will last for more than a few years has potential to be a charitable donation. 

Electronics can be good items for donation, but rarely are given a second glance until they are either completely outdated or broken beyond repair. When donated to an educational non-profit, your donated electronics can be used to teach people to rebuild and refurbish electronics.  Old collections and antiques can be liquidated and the proceeds donated.  Virtually anything that someone else can make money off of can benefit a non-profit. Artwork of any taste or style can be valuable, as long as it is in good condition.

If your donation is worth more than $500,000, or if you donate more than that value in a year, there will be necessary paperwork for your tax-deduction.  The more you plan on deducting, the more specific documentation will be necessary for the write-off.