A true mancave is an inspired one. It shouldn't just reek of man - it should have your fingerprints all over it. And if you have some cash laying around, I strongly suggest you consider spiffing up yours with a few of these things. The great news? They're not remotely costly. In fact, most of them you can do yourself on a shoestring budget.And don't think of it as interior decorating - lets avoid that term at all costs. Just see it as further "dude-ifying" your digs.