I would rob a bank, assuming the suitcases and bags you were going to stuff with money could be made invisible as well. Then, what the hell, I'd continue to a few jewellers and rob some nice diamond rings. Not really posh jewellers or really really pricey stuff as you'd never be able to sell it on. After dropping all the swag at home, i'd hang out with my son and his mates to see what they really get up to and talk about.