Basically, the way they were running it was 'bring along a tub of paper documents you want shredding' like personal data - bank statements and the like, and instead of paying for the secure shredding (which is recycled afterwards), donate a bag of food to their 'food bank' collection.
Obviously, it takes the participation of a professional shredding company (maybe one already visits your workplace?) but what a great way to raise money/supplies for a worthy cause.
I'm also thinking animal shelters that could recycle the shredded material for bedding perhaps, in return for pet food donations?
Anyway, a great idea to spread a little Christmas cheer and help the environment at the same time (not to mention the de-cluttering of your home).
Who says it has to be a Christmas only idea?
photo credit: zevotron