What to get girlfriends parents for a christmas gift

[recondite7]

I'm 22 and have known my girlfriends parents for awhile and they have always been very nice to me and have gotten me something for christmas the last couple of years. I haven't gotten them something before and I would like to do something this year for them but I have no idea what to get. They are in their early 50's, are somewhat artsy and live in Austin. I want to get them something around $50 but I have no ideas at all. Any ideas?