150 Types of Unusual Investments – The List

140. Used Cell Phones – a number of websites will pay cash for used cell phones, even broken or damaged ones in some cases.

If you can find a source at a lower price, such as buying them in bulk from an auction or buying them from people who don’t know or care that they might be worth more money online, then there is money to be made on the spread.

Essentially buying low and immediately selling high.