Peterson Gas Logs Decorative Acorns – Set Of 6. AC-6. Pine Cones, Branches and Wood Chunks. This Peterson Real Fyre Decorative Set includes six ceramic acorns in assorted sizes. Can be used with any vented gas log set or fire pit to enhance its appearance. Can be used to decorate the fireplace floor with vent free sets. Cannot be added to the log stack of a vent free unit.