I think these awesome galaxy shirts would be great to make from Brownies on up, however–I think the Guides+ will have more luck with it.
I love the shirt idea, girls can bring in their own shirts from home to work on, and you being the crafting supplies. This is a really great OUTDOOR project! Saves worry about the mess.
These would also make fun tennis shoes, pillow cases, even shorts! If you put a tent shape or tree shapes down, you could make the most amazing camp shirt the world has ever seen!
For the older girls especially, I would encourage them to take this method and stylize it however they want, get them to put a little time into thinking how they want it to look, what they want to do with it.
DIY Fashion: Painted Galaxy T-Shirt – College Fashion— Read on http://www.collegefashion.net/fashion-tips/diy-fashion-painted-galaxy-t-shirt/