What glows under black lights?

So, i painted all of my furniture black, and bought 5 black lights to replace the original lights. That way i can draw on all of my furniture. But highlighters are hardly showing up. I need something that is really bright. But i want it to look like normal furniture during the day. Crayons, markers, pencils, paint, or some cheap alternative? What should i use? Links would be great too!