Besides my car, these past few months I've become hooked on buying tools. Especially if they're german and occasionally japanese made. My boss has a set of power tools from a german company called "Metabo", I absolutely love them. Would buy them myself if I didn't already have a bunch of Milwaukee stuff (which is made in China these days).
I occasionally buy cool statues or figures, but not too often. My most recent statue was a SS Goku fighting Frieza in his final form.