Don't believe in Diamond Stones (nobody really buys them as much as they do Gold). Land is eternal even under water, you can grow gardens after it surfaces. Earthquake resistant structures are better, they can stand at worst calamity. Cash is useless (it poses exchange rate drafts, carrying issues, and theft losses). Plastic is good if you have self control. Best of all, land, indoor art and some people for investments.
Advertizing? Hahahahh there are only fewer messages left to convey artistically, go back to fundamentals like USA says. But again, we know you can prop new faces and make same old things look interesting.
when you rope in bollywood stars for products like soaps or hair oil.. for promotion .
even the newest product in the market endorsed by a star , and he claims his/her beauty is because of the beauty cream or whatever . while they are goodluking much before the launch of the product itself..!!