Carpet is good. Why not take it wherever you go?
Step 1: Get Materials
You will need:
Carpet(probably between 1 and 1.5 sq. ft.)(the larger the piece the easier it will be to cut out)
Something to cut with like a knife or cutter(scissors don't work)
Wooden kitchen skewers
Something to trace around(your foot/shoe)
Step 2: Trace
Trace around your feet/shoes on the backside of the carpet. Save enough carpet to cut out the straps.
Step 3: Cut Out Sandal Base
Cut out the sandal base using a knife or cutter.
Step 4: Duct Tape the Kitchen Skewers to the Bottom of the Base
Cut the kitchen skewers to size and tape them to the bottom of the base. The skewers will help make the sandals less floppy.
Step 5: Cut Out Straps and Tape Them to the Sandals
Cut some straps out of the leftover carpet and attach them tightly with the tape.
Step 6: Done!