A lot of us remember those orange boxes.

When I was a kid, I trick-or-treated at least a couple of times for UNICEF, the United Nations Children’s Fund.

Begun in 1950, the practice of collecting spare change while you’re making your Halloween rounds – often in place of collecting candy, adding a further altruistic element to the event – has helped children around the world.

More than $188 million has been raised by trick-or-treaters to help provide food or clean water around the world. Donations also helped victims of Hurricane Katrina in the US.

Check out trickortreatforunicef.org.