Bad reply! Don't let your own opinion cloud your sales figures!

Glow in the dark disney stickers are cool are they? you stock those. OK plasma balls are a lil 80's but some peeps find them cool. (Oh, and they would actually glow on your stall, even on a sunny day)

Um, you are the R&D dept. What R did you do?
If it glows and peeps ask for it you should sell it:P~~~~~

IMHO: plasma balls and similar are cool. But I'm not part of CGT so it's not my place to say.

Some of the the examples I like can be seen here:
White plasma ball (Krypton gas): http://www.youtube.com/watch?v=DuHbTy-Llps
RGB ball (but I can't see much of the blue): http://www.youtube.com/watch?v=SKIJKrl35as
A Borg ball: http://www.youtube.com/watch?v=EP8-ZS79gok
And another which I like since it feels very fluid - the cauldron variant: http://www.youtube.com/watch?v=Mh_HfXq-kCk

If you want some of the list of possible colours, look here: http://www.egglescliffe.org.uk/physics/fun/plasma/plasma.html

Or you could just look at the pretty videos and then ignore this post. ;)