Who would have ever thought making your air-freshener could be so easy and chemical free? It will spread a sweet cinnamon smell in the air and I don't know many people who wouldn't enjoy that particular smell. It also looks very interesting and in my opinion, it would look great on benches, dining tables or on display shelves.
Here is what you need to do:
Cut up the top of an apple and empty out the inside of it leaving the outside as is. It should look like a cup. Then, put a cinnamon stick in it and fill it up with hot water. The water helps to get the cinnamon smell. This is a no-waste type of a project. Don't waste the inside of the apple when you carve it out. Eat it or use it in desserts or juices. When you are done with the air freshener, you can still consume the remaining too (as long as it is in good conditions). A brilliant idea!