Possibly, but the market amongst people with a lot of money to spend on frivolities is quite saturated, and by nature any entry you make into that market is eas

Possibly, but the market amongst people with a lot of money to spend on frivolities is quite saturated, and by nature any entry you make into that market is easily ignored by your target audience. Contrast it with say an aeroponic backpack which would harvest moisture from the air and cultivate a personal crop of an edible tuber root for aforementioned meeting thirst and hunger needs. Totally speculative of course, but anything of that magnitude which could be pulled off would be an absolutely wild profit maker and would not be prone to being ignored by the just plain old hungry and thirsty target market.