quiltingshorttimer---my blacklight powder came with my used longarm machine purchase, but I've seen it online somewhere. The blacklight chalk pencil I bought from a vendor at a major quilt show, and I'm sorry I can't remember who that was (or even what show it was---several years ago). I'm sure you can find them with a google search. My Gammill has a thin fluorescent (12"?) bulb in the front light, easy to swap out for the same size blacklight fluorescent bulb, which is available at my local Lowe's.