Pots

The humans were working outside this afternoon, and they found a bunch of flowerpots that aren't being used. Needless to say, the rabbits were thrilled, and are planning to put them to use right away. I think they're plotting to hop out as soon as the humans go to sleep to start gathering dirt to fill the pots for planting purposes. Does anyone have an idea for how I can bunnyproof the doors fast so they can't make an escape to get those pots?