If you visit Google's Web History page, you can see every single Google search you've run, while signed into your Google account, for years. And it's not limited to text searches -- you can also see your history of Google image searches, Google video searches, Google Maps searches and so on. This data is stored by default; users must activate Web History to access it.

https://www.google.com/history/
 
 
Word documents and other data files can be hidden on most everyday items with digital storage capacity, such as Playstations, XBox's, certain watches, or a digital camera. The camera doesn't mind and ignores anything that is not a photo, but it's a nice "safe-house" from prying eyes.