While you will probably not find a coin worth $50,000+ in your pocket change, you could very well come across coins that are valued at anywhere between 5-500 times its face value. Quarters made before 1964, Indian head pennies, and many other older coins are worth far more than their numismatic value. Older coins that are in extremely good condition can also have a higher intrinsic value.
If you have experience as a personal assistant, secretary, admin assistant, or something in a similar field, then becoming an online PA may be a great role for you. Many professionals want someone to help organize their business and personal affairs. Jobs could include sending emails, managing financial affairs, booking flights and arranging day-to-day activities. If you are interested in this line of work there are many PA agencies that are crying out for reliable assistants.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.