When you’re putting used office paper into the recycling bin, be mindful of one thing: Keep deeply dyed or brightly colored paper out. Imagine a new red sock going into a load of white laundry. Brightly colored paper will leave ink all over the white pulped paper, making the recyclable paper worthless. This means keeping construction paper and crafting paper supplies out of the recycling bin. The only kinds of colored paper that are really acceptable are lightly colored in the pastel shade color spectrum. But you know the rule: When in doubt, toss it out.