<html><head></head><body><div class="ydp39737dd2yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div dir="ltr" data-setdir="false">For REALLY cheap, just paint it on the set. If you have UV lights, for a bit of added punch, use fluorescent paint on something like 3/8" backer rod. Then, use a bright UV light source that is very close by (if diffuse) or use one of the LED based ones that have a narrow beam. Though, to be truly convincing, it has to be seen against a black background, and without a lot of ambient light.<br></div><div><br></div><div class="ydp39737dd2signature"><div dir="ltr" style="font-family:Helvetica, Arial, sans-serif;font-size:16px;">-Joe</div></div></div></div></body></html>