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.
Concrete floor stain. I stained my concrete front porch using iron sulfate powder (50 lbs. for $16) diluted in water (1-2 lbs. per gallon). It took 3-4 coats to get the effect that I wanted. I sealed it with a water based concrete sealer. i seriously dont believe this was only $16