I remember when I was a senior in high school: I think that was in 1992, and my science teacher said that nuclear power will save the world if only people could get over their irrational misplaced fears. I think he might be right.
I think the evidence shows nuclear energy has taken root. France, China and around the world, nuclear power plants are growing.
So my pick is nuclear / uranium ETFs. Easy to hold, easy to sell, no fees other than trading fee, a mixed bag of the uranium commodity and energy producers and miners.
Go forth and prosper.