This is the perfect material to use for nice cushiony shoes; it has great shock absorption for walking, and becomes soft and pliable for standing.
Step 1: Materials
Bowl to mix in
Heavy duty Card Board (i found some in an old 3 Ring Binder)
Scissors (i only had an exacto knife)
Thread and needle
Step 2: Cutting
Cut out a section of the sheet that will be able to completely cover both sides of the cardboard foot. Make sure you leave one of the long sides intact, you will be using it for strips of cloth later.
Step 3: Condoms
Take a condom out of its package and unroll it completely. Pour some oobleck into the condom (it is easier if you have someone to help). Fill it about 3/4 of the way so that it can stretch a lot if it needs to.
I made 4 condoms for each shoe. You may need more or less depending on your foot size.
Arrange them on the cardboard so most of the surface is covered.
Step 4: Sewing the Cloth On
The first part is the hardest. Lay your cardboard flat against the cloth. Make sure that you are able to wrap it all the way, so that there are no gaps, and all the seems are on the bottom of the shoe. Start at the toe and work your way to the foot. If you have trouble you can try Krazy Gluing them into place, and then sewing. (the glue won't be strong enough to hold it by itself.
Put the toe condoms in when you have sewn about 1/3 of the way. nestle them up so that they reach to the tip of the toe.
When you are about 2/3 of the way put the heel condoms in. Sew up the rest of the shoe as tightly as possible.
Its OK if there are some bumps and ridges. Your weight should be able to flatten most of them out if they aren't to extreme. you can Krazy Glue around the bottom so make it stronger.
Step 5: Tie Them On
Wrap your feet securely onto the shoe and take them out on a test drive.