Assets that may surge in value are naturally grown fruits and vegetables. ( the ones from synergic agriculture with no pesticides, no ogm, etc. ).
People sooner or later will find out that what is labelled as "organic" actually isn't, if you live in first world countries at least.
And the demand for natural food will grow exponentially.
Try to run a business in that field, and at the same time advertise (showing also evidence) that most food now is ogm and polluted.
You will easily create the need for your natural products.
Of course the corps and govs will try to ostracize you because they want to push Ogm , but if you are able to resist them you will make a ton of money