I got a set of these bottles:
They have a very small metal nozzle, allows for extremely precise application of whatever liquids you might need to apply.
I have 3 bottles currently set up: water, denatured alcohol, and wood glue. I put a band of blue electrical tape around the denatured bottle so I can immediately tell it apart from the water.
I might make a danish oil bottle next, might be handy for touchups.
They have really improved my work flow, just the tiny 1/20" dabs of glue in finger joint notches has saved me a ton of time, vastly reduced glue cleanup (to pretty much zero).