The best part about the purse besides it being practically free, and recycled and unique, is that you can see what's hiding on the bottom.
This instructable is just to give you an idea of how to sew with plastic bottles. You can make anything, messenger bag, tote, wallet, ipod case, you name it. Take the idea and run with it.
You will need:
Plastic water bottles
Fabric (thick, sturdy fabric)
needle and thread
sewing machine (sturdy ones for sewing leather/denim)
extra machine needles
fishing line/ wire
small drill bit
Step 1: Prep the Bottles
I'm guessing the ironing plastic isn't healthy. Open a window, or turn on a fume hood or something. It doesn't make much of an odor, but just in case.
Don't let the plastic directly tuch the iron. It makes a MESS!
I find any remaining part of the label tends to melt off when ironing. If you have any sticky residue, you can just cut it off, or try wiping it off with some vegetable oil.