These sites offer some free things.  You never know what new free stuff is out there.

Free Slide background sites

Powerpoint Backgrounds                          Office.Microsoft.com                                  TemplateWise.com                                Indezine.com

MyScrapNook.com                                     Pinterest PPT Templates                             Dreamstime.com                                   Graphicsland.com

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Free Font sites

1001fonts.com                                            Californiafonts.com                                     Dafont.com                                            Fontspace.com