Here’s another good reason to like Mondays. Not only can you get a free coffee at McDonald’s but you can also get a free sundae at Ben & Jerry’s. The offer is for a free sundae when you purchase a sundae of equal or greater value, and you must mention the promotion when you order. There is a limit of one offer per customer per day. I recommend calling ahead to make sure your location is participating. Go here to locate a Ben & Jerry’s near you.