The Bear Trap is known for trapping bears and other large animals, but it also works well to defend your minifigure from other minifigs that may have the temperament of a bear. But don't just take our word for it. Read this 5-star review from Brad titled, "Perfect Castle Defense": 

A brilliantly designed two piece trap. The center bar can be attached to a standard 1x1 tile clip allowing it to connect to base plates. This is my favorite method of defending my castle's secret entrance!

Thanks Brad! Check out similar custom LEGO Castle accessories here.