Cash Credit Card Emergency Lockbox

I made this with the idea that it can hold emergency cash or credit cards. The idea, (instead of freezing your credit card in a block of ice) is that it should be easy to get money and cards in, but very difficult to get them out to use. There are inside lips that should prevent items from coming back out. You could also superglue it or drill a hole at the end to install a luggage style padlock. I was going to make holes on the face to reduce print time, but I didn't want to be able to see the