I'm not sure I could get an elastic band the right tightness that I can get it off but she can't. Plus, I would be afraid if she messed with it enough and it broke it could pop off and hit her in the eye or something.
Thanks for the links. I have that first one for the fridge, and it doesn't extend out far enough to cover both knobs. I made the same assumption about the second and fourth links, because they are made for cabinets, not doors. The third one is a possibility. I actually just found this one and ordered it, so hopefully it will work.
http://www.amazon.com/gp/product/B00...00_i00_details
It looks like that cord is long enough that it could extend out far enough. Fingers crossed. Thanks again!