So you would like to make your own mayo or food sauce at home without a whole lot of effort? The MYO Mayonnaise Maker is worth a look. It is a kitchen gadget that lets you make your own mayo dip. Simply add an egg into the top tray, salt/pepper/vinegar into the cup, and mix for a couple for 2 minutes by pressing the main button. Add some oil and mix for another 3 minutes, and you are done.
The device runs on 2 C batteries.