This is my first tip, but since I'm a newbie it's probably already known. Also, this gives me a chance to attempt an image upload.
I was trying to find a wood glue bottle with a small enough tip for good accuracy (I know most people probably use tooth picks for small areas) on small parts.
In the picture (I hope), are some glue tips. "A" is the standard wide tip that came on the carpenters glue bottle. Too wide for fine gluing.
"B & C" are tips sold at Wal-Mart in the craft section. They both come in the same package, but I actually didn't realize it until I got it home and opened it. The metal tip (C) is screwed onto the tip of the narrow plastic one (D). The result is a fine, pencil-thin, bead of glue wherever you want. Be sure to keep a pin in the tip when not using it though as it tends to clog easily.
In addition to this tip, I also found that the tip of an old mechanical pencil is basically the same as the metal one sold in the package. I tried this and it worked just as good