1. Find a costume exchange party. I’ve never done this - but it sounds like a blast! Some community centers, nonprofit organizations, or schools host Halloween costume exchange parties. Take all those old costumes and trade them with other people’s used costumes. It’s inexpensive, and a great way to make your Halloween costume eco-friendly.

2. Have fun with eco-friendly costumes. Dress up as a treehugger, Al Gore, a trendy cloth bag, a compact fluorescent light bulb, or Mother Earth. But don’t buy anything new - that doesn’t make for an eco-friendly Halloween - instead, look in second-hand stores, your friends’ and relatives’ closets, and your basement or attic for costume ideas.

3. Indulge with fair trade, organic chocolate. Many mainstream and health food stores sell eco-friendly bonbons made without preservatives or chemicals. In Canada, the TransFair logo certifies that cocoa products are directly traded, fairly-priced, environmentally-protected, and worker-friendly. Since giving away fair trade, organic chocolate to trick or treaters may be a little pricey, consider buying local candies.

Read the rest of the 13 tips here.