Quite a few.
Behind a large plant pot at the side of the house. They left a card in our mailbox to say it had been left in an outhouse. The package itself was tiny and could have fitted in our mailbox.
In a mini greenhouse in a far corner of the garden in winter. No note to say it had been left there. (T-shirts for DH)
In a neighbour's garage. (Shoes for me).
Propped against neighbour's French doors. (Aftershave for DS)
Glass TV table delivered 3 doors up. Card through the door saying it had been left at a house number that didn't exist and with a person we have never heard of - and we were at home when they left it.
Three bales of woodchips delivered about 8 doors away. We saw them do it and ran out to tell them. We had roadworks going on outside our house and I don't think they could be bothered with the hassle.
We are retired and at home a lot to answer the door.. We have a nine inch high house number on our mailbox which is easily seen from the street but we still have stuff delivered all over the place.