Treasure Hunting on the internet
Two words "Unclaimed Property". Virtually every state and most Canadian Providences have a Department of Unclaimed property for its citizens. These departments all have databases that contain property like forgotten bank accounts, security deposits, retirement accounts, insurance claims, mislabeled checks, and other things. The databases are accessible over the internet. Access is free, and while the recovery process might be administratively grueling, there should be a way for you to get your property back.
Now the idea part. The internet savvy crowd is very use to using search engines. Search tips like not being too specific in your searches, wild cards, variations in spelling, titles, etc. is just part of daily life. However, there are many folks without this skill set, or even access to the internet, often parents or grandparents. So I highly recommend searching family names, maiden names, etc. Search for your family and friends and tell them if you find something.
Now the fun part. Search your churches, charities, business, and governments. You will not believe the number of hits on searches like "City of", "State of", "Department of", "County of", "Fort", "Navy", "Naval", "Army", "Air Force", "Commonwealth of", "Country of", State names, Country names, even common acronyms. It is very easy to understand that through personnel churn, lost paperwork, or changes in administrations these accounts might become lost. My favorite find was seeing two accounts for the department of unclaimed property in my home state's unclaimed property database!
Here is a good link to get started:
Evey place I have posted this link, someone has come back and said they found something. I would be curious to hear back. Sort of living vicariously through other treasure hunters.
Be careful, it is addicting.