I like the ideas featured in this pin for creating musical instruments (music walls) for children to use outdoors. discuss doing musical activities that encourage explorations with sounds and movement, which fits well with these outdoor ideas.
Cole can paint pine ones for Xmas tree ornaments! Scissors and Spice: Scissors Craft: Pinecone Decoration Ideas for Christmas. And how to use up your pine cones and entertain kids at the same time - kids love paint!