Art prints are a fantastic gift. And if you buy from BlueFlip the artist will donate 10% to a charity of their choosing.
Prints range in cost from $15 - $50 and there's an artist to suit anyone's style.
I'm a Dan May fan myself.
Remember that framing is the most expensive part of collecting prints so don't overstretch yourself. And don't ruin the prints by not framing them properly. Lamination is for losers.