I make pitch glue, the "super glue of the woods," with 4 parts pitch, and 1 part each ground charcoal and ground,dried deer or elk dung (well refined plant fiber). You can collect the pitch from conifer trees, but it tends to come with chunks of bark. To cheat a bit, I buy rosin in cans from the local ballet dance supply (I'm sure you all know where your local ballet shop is), and it's pure. Charcoal is something we all have, but for those who don't burn wood, you can get charcoal from pet stores that have aquarium supplies. None of my local stores stock dried dung on a regular basis, so I collect that (it also makes nice beads when dried and coated with verathane). Melt the pitch, and stir in the sifted dry ingredients. I collect it on the end of a stick, and it sets up almost immediately. It's also good for hafting arrowheads, and for use as a campfire accelerant. It's easy to melt it and dribble it into whatever void you want to fill, either with a heat gun or by simply starting it burning.