Gather the pine cones. If you are using found pine cones from outside, look for ones that don't have any obvious mold or rot. Those of you buying unscented ones can skip this step.

Clean and dry them in the oven. When you bring them in, give them a good shake over your garbage can to release any dirt. You can also do this outside if you'd rather. Then spread them out evenly on a cookie sheet lined with aluminum foil. Put them in a 200 degree oven for 30 minutes to kill any of the critters that may be hiding inside the cones. Don't skip this step if you are using found pine cones.

Add the scent. Once the pinecones are cool, add them to a large bag- either a large shopping bag that you double bag or a ziplocking galloon sized bag. If using shopping bags, fill the inner bag about 2/3-3/4 of the way full to leave enough room to tie the bag off after the oils are added. Then, I added 12 drops of cinnamon oil and 2 cinnamon sticks. Then tie or seal your bags and give them a shake, rolling the pine cones around so the oil coats them well.

Wait and enjoy! Let them sit in a sealed bag for at least 2 days for the scent to develop. It will be stronger if left longer. Then open and use them in your decorating or craft projects.