an original design incorporating the efficiency of a rocket stove into the design of a pizza oven This will reduce the amount of fuel and time required to heat your oven and also stops the oven from spewing smoke out constantly. It burns almost perfectly clean. Check out my website (http://lhalfo011.wix.com/rocket-vs-oven) where I talk about the science behind how it does this.
Repurpose an old refrigerator into an ice chest. Great idea - I am thinking for us it would make more sense to repurpose a mini-fridge so we wouldn't need to use as much ice. Don't forget to drill a hole for water removal!