I love encouraging my kids to be artistic. So far, I have one that LOVES to be creative and do anything crafty or artsy! My other one takes some encouraging. I like to help to encourage by framing some of their art around the house.
The only thing with that, they may want to frame everything. (Instead I save it, scan or take a photo of it and then create a photo book for them).
The top piece is exactly how the art was done. The bottom piece I cut up and pasted to a card and then arranged on a page to fit the frame. You could do some very fun stuff with your kids art and it looks great in the house! Plus it is an inexpensive way to decorate!