Getting a monitor on a DSLR* can be tricky. Base plates, cages, and magic arms all come to mind. If you want something a little more compact, cold-shoe ball mount is the go-to option.
Caleb Pike has a sweet little solution that uses GoPro parts that make a mount that only tilts and does not rotate or pivot. This makes it extra easy to tilt the screen with one hand and not worry about it rotating around. It stays perfectly aligned.