So here's what i did. First, begin with swollen foot in very bulky wrappings in surgical boot.
Next, fold a hand towel in half length-wise and wrap it around the ankle firmly, tucking in the ends.
Finally, put foot into large (13-gallon) plastic trash bag. Pull bag up, place large rubber band around the leg, above the towel. Fold down the bag, place another rubber band around the top. (Notice "normal" toes to left for size comparison!)
Take shower...enjoy!! The only improvement was that once i was able to drive again, i went to the hardware store and got duct tape...it makes a nice tight seal around the top when applied to the top of the bag and the leg simultaneously, so you can take a nice long shower without worrying about springing a leak. The only drawback is that the duct tape sticks to the bag so well, it tears the bag when you go to remove it, so you only get one shower's worth per trash bag.