I've used a few of these recently to good effect:

ebay.com link: DC 12V 5M 3528 UV color 300Leds SMD Flexible Lamp Lights Energy Saving Led Strip

Run them around the floor or ceiling edges and it lights up the whole room

I have tried traditional 'black lights' and these strips,

The LEDs give off a much brighter light and certainly give a great 'glow' to the room, they also light up UV reactive material very well (like white t-shirts or plastic parts on your pins).

The colour is not the same as choosing a 'purple' on a standard RGB strip either, more 'UV' if that makes sense

The 3528 sized LEDs on the strips are also not too hard on the eye, which often 5050 ones are - plus they draw less power.

Perhaps grab one for $10, light it up and see what you think