You need pinecones, bird seed, peanut butter, and something to spread it with for this activity. If you are doing it with a group of kiddos beware of peanut allergies. For a peanut free version you can use Suet (animal fat), you can get this from the local butcher or in the bird seed aisle (just soften it a bit in the microwave).
The first step is to spread the peanut butter all over the pinecone. Keaton decided he wanted a bite;-)
After that you roll them in the bird seed. A optional step is to attach string to them so that you can hang them outside. I would suggest doing this before the peanut butter unfortunately I forgot so I will be getting nice and sticky as I attach the string later.
And there you have it a nice fun activity for the kids and treat for the birds;-)