After reading the comments given up to now, IMHO, LED is right on the money.
Keep in mind-we're discussing people who have more dollars than sense, uh, I mean, cents!! They are also people with too much time on their hands.
1st-I'd bring the camping equipment and other gear that I would use to go camping in the mountains for 4 days and I would set up my van for camping w/a generator and string of lights, a coleman 2 burner camping stove, a large pot, and a large portable table.
2nd-I'd get a "special events" business license that allows for the sale of beer and wine.
3rd-I'd stock up w/beer, wine, cokes, sprites, dr. peppers, mountain dews, bottled water, little debbie snacks, chips, keychain lights, collapsable canvas chairs, decks of playing cards, paper plates of jambalaya for sale.
That would double the investment pretty quick and you'd be laughing the whole time selling everything at twice what you paid for it.
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QMC, USCG (Ret)
The best luck is what you make yourself!