I see you've got quite a running list, but if you don't mind, I'd love to be added to it.
I would love for you to draw either:
My pit bull, Sparta, playing violin or cello in some old-fashioned (like, pre-1900s, but not necessarily feminine) clothing. Perhaps something like this:
http://www-personal.umd.umich.edu/~ckecskes/Actors/Gerard Butler/phantomopera53.jpg (If you've seen the movie, you'll know the dress. Unfortunately, I can't find a better pic of it).
Either of my Nagas, Mavain or Ngozi (no refs for Ngozi, but there are pics of him in my gallery) doing something tribal-y, maybe wearing some ceremonial garb, since you said you like bright colors.
Again with the bright colors, a bright bay Arabian (male or female doesn't matter to me) in a belly dance costume? It's a little difficult to find references for male costumes, but here are some typical female ones:
http://www.gotriadscene.com/images/event/6114/sadie.jpg
http://www.turkeytravelplanner.com/galeri/istanbul/images/bellydance_dresses.jpg
So yeah, take your pic of any of those, whenever you get around to them. I'm also willing to trade, if you prefer.
Thank you very much in advance!