Theme Ideas?

Hey everyone, next month I'm going to be helping put together a jam and it's been suggested by a couple of the organizers that we do themes. Well, we've kinda spitballed ideas around, but now one of them wants me to compile an acutall list. So, was wondering if you wonderful artists could help me out by posting a few ideas YOU would love to see in a jam. Go ahead and duplicate each others' ideas, that will just let me know which ones are most popular.

Some of the ones I have right now are Tropical, Monsters, Flowers, Tribal, and One Stroke... but more would be very welcome!

Matching backgrounds... using pieces of patterned fabric or scrapbook paper, paint your hand/arm into the background.

The usual are always good as everyone always has something different to show but some other ideas could be

Super quick designs 1 min/2 mins etc..

Strange colour combos, colour combos that you would never normally
dream of using (amazing what works that shoud'nt!)

Or limited colours that you can use

Animal prints

GNO (Girls Night Out) and Boy Designs

Match the fabric tell everyone to wear their favorite print.
Animals
eye designs
superheroes ( we all need to up our game this summer more superhero movies)
cartoons
off the wall ( the unusual designs or costumers like grown man that want's 6 point buck)
sports logos
local favorites
Wizard of Oz
Foods

Is this for what I think it's for, Tilly?

Some of those previously mentioned that I like:
Monsters
Tribals (I suck at these)
Flowers
One Stroke
Girls Night Out
Super Heroes
Boys

I just love to see how everyone's styles differ.

Haha, yes, I believe it is... Scoop wants a list and then we're gonna compare notes as he is putting together lists for balloons anf magic as well.

Thanks for the ideas everyone! Keep em' coming!