Hunt a deer or buy a cow, have a butcher process it, then store the processed meat in a freezer. You can have meat for a full year for your entire family at a low cost.

You can grow hydroponic lettuce, indoor tomatoes, strawberries, carrots, etc. There are many good resources to learn. It's also a past time that will teach you one thing or two.

Then, if saving time is what you are looking for... robot vacuum, mop, and a all-in-one cooking appliance (e.g.: Thermomix) can help.