these are nice house socks insulated from the floor and prevent you from slipping.
Step 1: WHAT YOU NEED
Step 2: CUT INNERTUBE
cut the inner tube in half, and cut 2 pattern of the shape of the bottom of your socks.
Step 3: SEW TOGETHER
sew the inner tube to the bottom of your socks (use a tiny bit of vegetable oil on the top of the inner tube to allowed a better running of the sawing machine).
see also my instructable "tips to sewing inner tube".
Step 4: DONE!
youre done! enjoy!