That's a good one, Blondie. It's one of the many found at this link.
I hate to blow my own horn. However, mine is the only milk bottle design (I've seen) that can be toted with one hand -- either from the plunger handle or the milk bottle handle. That, because the handle snaps into place and is "captured" by the neck of the bottle. In addition, think of the wonderful graphic design possibilities (just joking, of course).
I think that you lurking JW's should dig deep into your pockets and send a generous donation to "Worldwide Work" in behalf of this Miracle Plunger Caddy. Recall the Miracle Wheat near the turn of the last century? I suspect Watchtower headquarters has a donation bucket just outside the door for your convenience.