I found this neat idea in a Gooseberry Patch book I just got. It saddens me because most of the houses we are looking at to buy don't have fireplaces. I have had a fireplace all my life and have such fond memories of cozy nights by the fireplace.
Soak pinecones in any of the following solutions. When the pinecones are thrown into your fireplace fire, they will burn different colors.
1/2 lb soda to 1/2 gallon water OR
1/2 lb borax to 1/2 gallon water OR
1/2 lb salt to 1/2 gallon water
After soaking pinecones overnight, remove from solution and place in mesh bags to dry thoroughly.
1 week ago