Would you pay $76 for a shot glass? What about $52 for an oven mitt? And $50 for a jar of marbles?

You may shake your head and say no way, but in a recent series of eBay auctions, the consumers did just that: they shelled out considerable cash for objects that to all appearances should never have fetched more than a couple bucks.

So what made the difference? Each item came with a unique tale.

The auctions were part of the Significant Objects Project, an experiment designed to test the...