RobocopyKIS
Graphical keep-it-simple (KIS) wrapper to Microsoft's Robocopy
...The folder names are created on the USB drive and the contents mirrored (i.e., the contents of your User folders are exactly mirror under the target folder) to each unique folder. The contents of the destination are copied or deleted to match the contents on your main computer's User folders. The selection of folders allows one to only backup the data that they care about and not everything under the User's directory like the folder 3D Objects or other hidden folders like AppData that you may or may not want mirrored.