The upcycling process is one of the aspects of this project that makes it a "green" one. The other is the materials, all of which are easily obtained for free, because they would otherwise be discarded, (you probably already own glue and scissors) and there is minimal energy/effort expended.
Step 1: Gather materials.
-insulating bubble wrap (silver)
-scissors and/or exacto-knife
-glue, preferably hot-glue but any other quick drying glue will do
-ruler or tape measure
-marker or pen
-about 45 minutes to an hour of free time
Where to locate materials:
Crate - I found this crate at my local grocery. One of the produce clerks informed me it's something they usually discard/recycle them because the distributor doesn't re-use them for shipping.
Insulating Bubble Wrap - Also found at the grocery. Cheese is often shipped with this material so try asking the Deli or Cheese departments is they have any leftover from their shipments.
Scissors, Glue, Marker or Pen, and Ruler - You probably already have in a drawer or cabinet some where. If not, you can purchase these at most any grocery, convenience stores, etc.
Step 2: Measure.
If you feel confident in your ability to make marks on the bubble wrap without having to measure with a ruler, then do so. It will save you time and a piece of paper. Just be sure to keep the crate still so the marks aren't slanted or crooked.