In regards to clear plactic for the pop door-
I just came home from Joann fabrics and they have 10-20 gauge clear plastic to put over the pop door as a chickie door. It's 7.99 per yard-i bought the 15 gauge stuff-stiff, but not too stiff...
they are having a sale in which you can pick up a coupon in store for 50% off (until tomorrow). so it cost me 3.99 for a full yard, i could make about 5 chickie doors with what i have. Having my hubby put this up tonight-we'll see if they get the hang of it! thanks for the suggestion above on the post!