A strong segment of flea market shoppers includes those who repurpose old things of a more miscellaneous nature. No wonder flea market fans include environmentally conscious consumers and designers. With a bit of creativity (and sometimes some basic DYI supplies) an old birdcage can be transformed into a lampshade, an incomplete vintage croquet set into as an umbrellas stand.
(Photo: Old card catalogs show up at flea markets from time to time. Many libraries have switched entirely to electronic cataloging and no longer need their old card catalogs. Bits and Bobbins highlighted the repurposing of an old card catalog as attractive storage or organizing furniture.)