no because the machine would travel with you, the upside to this is that the garentee on the parts would never run out, you can always travel back in time and get them fixed for free!!!
hangs around in parks and out side local shops drinking lambrini and cider normal wears tracksuits with bottoms tucked into socks and boxer shorts waist bands showwing over the top. often swears alot cant talk propper english, wears alot of gold chains rings and females wear rediculously huge hoop earrings big enigh for parrots to sit in.
four leaf clovers is the first that comes to mind, fingers crossed, a rabbits foot, trowing salt over your shoulder, finding a penny, horse shoes are some others. there are loads!