Flip Flop Slipper

You can easily make a flip flop slipper out your bottles.

first of all, you flatten the bottle.

then you fasten and knot a string or rope below the lid of the bottle.

Tie a knot in the string using another string as you see.
and make two holes in the bottle to pass the strings through the hole as you see.

allow your foot to slide into the sandal.

fasten the lace around your ankle.

now you can walk and see how comfortable it is.