Well, I have a few bottles with long, fine spouts that I can simply fill with wood glue and use them for applications. I have found such bottles at Hobby Lobby, or "Dollar" stores and the like. Also, you can squeeze a little glue out on a disposable surface, and then dip the end of a toothpick in the glue and apply it to the wood surface at the joint. Not too complicated, just whatever it takes to do a neat job.
