YourMechanic for groceries. I want to pay a flat recurring fee and have my fridge be filled with basic food products (e.g. like a hotel's minibar) you chose from 3-5 preset packages out of 3 pricing levels, setup how many people are in the house and you are done the service will calibrate (with your help) the content of the packages, e.g. if you see you eat more bread than you drink milk and end up with too much milk…
One issue with a CSA is that I'll get odd amounts of things: not enough potatoes to get a dish for instance or an overwhelming amount of parsley, etc. It would be good if there were a feedback mechanism so that (a) I would get the food that I wanted, and in the amounts that are good for me or my family, and (b) so that the farmers knew what kinds of crops to focus on and deliver to their members.
In my experience the people who run CSAs are passionate about their farming and not on technology. If someone could provide a service like this, it might be helpful to them.