This is basically a rental service with a fixed yearly fee, so I guess they could draw up some sort of standard rental contract similar to the one that Home Depot uses. Maybe add some large ugly warning stickers, too.
Those are definitely two things I would not borrow from anywhere.
Do you never leave your house? You have never eaten off a plate you don't own? Never been to a restaurant? You've never slept in a hotel or at a friend's house?
(I went rouge and bought both dishes and blankets from Goodwill so don't come over to my house.)