Originally Posted by Sewnoma

Do you have any of the needles where you just pop the thread into the eye from the top, rather than threading it the conventional way? With one of those and some tweezers, I can thread and bury thread as short as a half-inch long. Put the needle most of the way into the fabric, pop that little thread tail in (grab it with the tweezers) and pull the needle the rest of the way through. Taa-daa! Thread tail gone.

Not sure what you could put on there to keep it from working its way back out, though. Not sure how likely that is, if you bury it close to the original knot. Maybe a dot of fray check?