Bolting Down the Egg?

Gavin

I have a son and nephew, they climb on stuff. I feel like I am tempting fate by not having this thing secured to the ground. I have searched - but cannot finding a cradle like the nest which can be bolted down - anyone seen something like that?

I am thinking of making a bracket which fits to the immobile portion of the hinge and attaches to a wall behind the edge to eliminate tilt hazard.