Lacey Hamilton hopes to attend the 2018 Winter Olympics in Pyeongchang, South Korea to cheer on the Canadian athletes. To save for the trip, the 22-year-old Mississauga resident drops spare change and $5 bills into a 0.9-litre mason jar that she empties into a savings account when it becomes full. “I live on a cash diet as much as possible,” she says. “I find that’s the best way for me...