All costumes/sets/decades unlocked in sandbox mode:
Note: This procedure involves editing a registry value; do not attempt this if you are not familiar with working with your system registry, as a mistake can cause serious problems with Windows. Start Regedit and use the “Registry/Export Registry File” menu option to create a backup copy of your original registry. Search for “Allow any Decade” with Regedit. Double click the “Allow any Decade” entry and change the value data to “1”. When you start sandbox mode, you will have access to all the decades and just about all of the sets, costumes, props, etc.
All sandbox rewards:
Note: This procedure involves editing a game file; create a backup before proceeding. Use a text editor to edit the “unlocking.ini” file in the “c:documents and settings