i would put it all in a plastic bag, tie up the bag, and put in in the trash
the trashtruck would come to pick it up and put it in, however, as they are driving, they hit a curb, knocking the money out. it lies on the street and someone notices it and(not knowing the money's in there), picks the bag up and gets it out of the street. all of a sudden, a street-dog runs and grabs the bag with its teeth, out of the person's hand, and runs off. the dogruns into an ally where a whole bunch of other street dogs are. right before they start eating the money, a guy throws a rock out of his dogs to get out of his ally. then he notices the bag and picks it up. for whatever reason he throws it onto the roof of a building.
2 years have passed. the money is still on the building, and it is a very windy day. a hurricane was hitting the city, and the wind was so powerful it pushed the money off the roof, into a passing truck, and the guy driving it was drunk, so he didn't know what he was doing. suddenly he crashes into MY HOUSE! the damage would have took a million dollars to fix. before cops showed up, i found the bag. thinking it might've been full of crack that the guy had taken which caused the accident, i opened it. there was the money.
so the answer to your question, What would i do with a million dollars? why, i would use it to fix my house