When I lived in San Francisco, I fell in love with the posters promoting the Golden Gate National Parks Conservancy. I collected them in note card format and still have them displayed in our finished basement.
A few years ago, I fell in love with a series of travel posters produced for United Airlines. I collected a set of them in note card format and have them displayed in our kitchen.
Now I've found a new love - a series of posters put out by the Illinois Department of Commerce and Economic Opportunity. Check out the whole Offbeat Illinois line at Cafe Press.
Can I find another area of the house to display a set of themed note cards? Should I concentrate on the wine posters? I'm still working out the logistics, but I'm certain I'll find a place for at least a few. Perhaps refrigerator magnets?