Chris, I received a letter from an attorney stating I had unclaimed funds in the amount of $5,000. For a fee, they would get the funds for me.
I looked up the unclaimed funds websites for the states I had previously lived in. The state where I went to college was holding a paycheck from a temp agency I worked at after I graduated. It wasn't $5,000, but still a good amount. I did the paperwork and filed the claim myself.
Other states had smaller amounts from utility refunds, vacation pay, apartment deposits, etc. They were small, but they added up.
"I told myself to quit you; but I don't listen to drunks." -Chris Stapleton