Anniethedog and I collected pinecones on a cold and snowy walk yesterday, that I used to make an oil lamp. To make a lamp you will need: A Mason jar, lamp oil from the hardware store, a drill to make a hole in the lid and wicks in glass sleeves. This type of wick can be found at a craft store, I bought these from oil lamp man.
After drilling a hole, insert the glass wick, fill the jar with pinecones and lamp oil. Pinecones, twigs, acorns and nuts will remain stable in lamp oil for months. For an dinner party, flowers and fruit look spectacular suspended in oil, but will only last a few days. The jar lamps work well outdoors, they won't blow out, even on a windy night.