
Yes, I've had photos of parcels on the front step saying they are in the (non-existent) 'open front porch'. It's infuriating.
I am considering getting a locked parcel box. I don't know where I would put it just now, but want to get the front lawn 'done' which will include re-concreting around the bay window, so will look into getting one sunk into the concrete when I do. Meanwhile, I might dig out the laminator and copy your idea, thanks.
Why do they tap on the door instead of ringing? It happens to me too, and it's maddening. My bell can be heard in the next village, so I'm not listening out for taps on the door. I usually have music or radio/TV on anyway, which would drown out a tap.