Here’s something a little different, but quite useful. The Novoflex Magic Ball is sort of an upside-down ballhead: The base has a 3/8 inch female thread to mount to a monopod or tripod, and a 1/4" top screw to mount to a camera or lens tripod mount (we include a pair of 3/8" to 1/4" adapters so it will work with any size. It does NOT have a quick release plate, the lens or camera is mounted and dismounted by the thumb wheel.
We don’t consider it particularly a ballhead replacement, although it certainly can be used as one. But it does makes a superb and extremely flexible head for a monopod, giving you a lot more flexibility than simply tilting this way and that and the handle (which is also the friction-lock lever) gives exquisite control. The handle makes it much easier to control on a monopod than a standard ballhead.
OK, we also like it because it looks really cool. Chances are you’ll be the only photographer around to have one. But the more we use it around here the more we like it.