I was looking at the bottle tips and came across a small (29.6 ml) bottle of Deco Art Foam Paint. It has a real small fine tip on it. I bought this paint for around $1.00 at Michael's. I drained the paint, and rinsed the bottle out (cleaned out nicely with water). I refill that little bottle with Elmer's School Glue and it works just beautifully. What I especially like is that it has a lid that snaps onto the tip and seals it. Can't be beat!