Self-watering planter. Cut top third off bottle. Drill small hole in cap. Pass string thru hole. Fill bottom of bottle about halfway with water. Place top upside-down in bottom and put plant in. String will wick up water.
Start a Fire with a Lemon - When teaching fire building skills it can be fun to try some fire starting methods other than matches. This video shows how to start a fire with a lemon copper brads zinc nails wire and steel wool.