There are number of ways to hide files and folders on Windows based computer. How about doing same on Mac OSx computer (just incase)? Hide Folders is a free and very basic utility for Mac OSx that allows you to hide any folder and nothing else. To hide a folder, just drag the folder in hide folder window and its done.
To un-hide and show the folder, select the folder and click on show button. This utility only has option to hide and reveal folders. Incase you want to add password protection to files and folders – then you need to buy Pro version of this utility. However, for only hiding files and folder – Hide Folders is all free for download and use on your Mac computer.