Highly keeled scaled snakes

[RAD House]

I have always loved the way harry bush vipers look. It as close to owning your own personal miniature dragon as one can get in my opinion. But I will never keep a venomous animal in home out of concern for my wife and dog children. Recently I discovered the Trachyboa genus or eyelash boa as they are commonly named. After doing a bit of research it does not appear that they exist in the hobby or are just impossible to locate. Also they are tiny little snakes, which is not ideal in my mind. Does any one know of any other non venomous highly keel scaled snakes available in the hobby? I have seen file snakes and am not a fan.