Bedroom door comes open during travel.

Had an epiphany last night. On the bathroom wall outside the bedroom door I could use a coat hook to hang a towel or jacket. I can use that coat hook to bungee the doorknob. Non invasive and solves two problems. I still plan on adjusting/shimming the strike plate but this just might work.

I thought of a magnetic door stop but on another forum someone said the magnet wasn't strong enough to hold the door. The doors are pretty light so it seems like it would hold, but that's what they said.