K-Fed's family cash-in by auctioning Britney memorabilia

We're all looking for ways to make some extra cash in these straitened times, and eBay is more popular than ever as we attempt to profit from our possessions.

I reckon there's a line of what's acceptable to sell though, and Kevin Federline's grandfather has strolled on past it, auctioning items from K-Fed's time married to Britney Spears.