Easy and Cheap...Small, Solar Panel Cooker...For less than $5.00, you can build an effective Solar Panel Cooker that will allow you to cook a small to medium size individual meal, using just the energy of the sun.
The materials necessary for building your own individual solar panel cooker can be purchased at your local home improvement store such as Home Depot, Lowes or Ace, as well as oven bags and canning jars at your local grocery store or Walmart.
(* Some stores will sell you cut-to-size bubble reflective insulation material, some will require you to buy the whole roll which can make twelve reflector panels)
The reflective bubble insulation can be purchased in a roll, (25'x 2') allowing you to make several reflective panels, or you can buy a pre-cut length in some home improvement stores.
This particular reflector panel is a 3'x 2' (three by two foot) panel.
Take hold of both remaining twelve inch flaps and draw them inward, toward each other to form a "floor" or "base" which will rest on the ground, enabling the reflective panels to stand up on their own.
Clip all three joined flaps with a large paper clip, assuring the flaps remain together.
(paint will adhere better to a used, scuffed bottle more than to a brand new smooth glass bottle. Use sand paper to scuff your newer bottles)
You can cook most anything you like inside of the jar, or you may use a larger darkened or black cooking pot inside of your oven bag in order to increase the amount of food to be cooked.
For most efficient heating of your cooking vessel (pot or jar) you can place the jar on a trivet, inside of the oven bag, allowing the suns rays and the hot air to circulate beneath and around the vessel.
Trivet : a three-legged metal stand for supporting a cooking vessel in a hearth ...a stand with short feet used under a hot dish on a table
All you need to do is increase the size of the panel reflectors, enabling the cooker to capture more of the suns ray and concentrating them onto the oven bag and cooking vessel.
For example you might cut a four to five foot section of reflective bubble material and measure equal distance from the sides, cutting your flaps and folding into a larger, more effective "sun catcher".
Like wise you can increase the height of the panels, making it that much more effective.