I have the solution. It involves removing item and throwing it as far away from you as possible, preferrably over a cliff or in to some water.
If you need a device to help keep your fridge closed they make latches/pins specifically for that.
If you need help remembering to actually close it then you may need more help than just that. I do not think the systems of a camper van/rv are going to go well for you.
Best of luck