A bag made out of packing straps.

Step 1: Supplies

Absolutely need:
Packing Straps any color or width.
Scissors
Bulletin board and push pins
One or two peices of clear tubing to use as handles depending on what style of bag you want. The tubing should fit 3-6 of your straps into it. You can get this at hardware stores.

Supplies to make it easier:
Packing Tape
Pliers

Step 2: Starting the Bag

Make a "t" with two packing straps.
Think about how big you want your bag to be. All of the packing straps that you use need to be A LOT longer than the bottom of your bag plus the two sides.

Step 3: Weaving the Straps

Now that you have the "t", weave other strips onto it.
Add straps and weave until the bottom is the size you disire.

Reminder: Make sure that all the straps are long enough to fit the bottom and sides of the bag you want to make.

Step 4: Folding the Straps

Get a ruler and put it to the edge of the bag's bottom. Crease the straps.

Do this to four sides of the bottom.

After you are finished with the folding, put tape on the perimeter of the bottom of the bag in order to keep straps in place.

Step 5: Starting the Sides of the Bag

Take a new strap and estimate how long the perimeter is and add about 5 inches or so. Cut the strap.

Weave the strap that you just cut into the sides of the bag.

Weave this strap around the whole bottom. Overlap and tighten the strap so that the vertical straps are pointing up. Clip the horizontal strap where there is excess overlap.

Step 6: Weaving

Keep weaving straps around the bag until you get to a height that you are happy with. Change where you overlap each time you start a new row. This is so that the bag has strength.

Step 7: Weaving Again

When you have the height that you want decide on what straps you want to be your handles. Clip these and the two straps next to it so that you will not weave these.

Weave the straps back into the back (shown below). The ones that are over the top strap go inside the bag. The ones that go under the top strap go on the outside of the bag.

Keep weaving them into each other until the strap runs out or it just got too long.

Do this until you have your 12 straps for your handles. Six for each handle. These should be consistant=if you have one handle on the fourth strap from the corner, it should be the same for the other side.

Step 8: Handles

Get your plastic tubing.
Idealy you want it to fit 3 or more of your straps into the tubing.

Take the longest strap that was not woven into the bag and push it through the tubing, then weave it into the bag where the handle is going to end. Do this for as many of the staps as you can (that were not woven into the bag).
Then repeat for the second handle.

Note:
I am using two different bags that I have made to show you how to put the handles on.