Candy Corn: For reasons unknown, candy corn is one of the staples of Halloween, despite it tasting like stale wax with a slight sugar coating.

It looks like the diseased teeth of a dragon that eats children. It is only given out to kids by the very elderly, who are still trying to tune into FDR's fireside chats, or by twisted sadists who obviously hate children, because candy corn is fucking disgusting. Like magic—dark, evil magic—there has never been a piece of candy corn that tasted like it was made in the same decade it was consumed.
Pennies: There was a time when getting a penny meant something. This was when a child could go on down to the general store and get eighteen Jimmies, a pack of Lucky Strikes and a fine pair of sock garters. However, times have changed, women can vote, socks just magically stay up and pennies are now just a copper burden on all of society. By giving them to children, you are simply telling them that you are too cheap to buy candy and wish to humiliate them by giving them the contents of your couch cushions. The sole item a child can buy with pennies is a package of matches, which hopefully they will use to start a fire on your property.

Toothbrush:

Lovingly ripped from http://www.toplessrobot.com