i use a stanley vice grip, with an upside down small ikea 3 legged stool, with only 1 of the legs attached, then have the vice between the handy and the stool leg. you can use it seated in any chair or recliner, or seated or laying down in bed, It works perfectly and is a pretty cheap option.
once handy release a hands free mount i can use it with this system, though im not sure i need it.