This free Water Splash powerpoint background is nice abstract background design that contains water droplets and curved lines over a white background.

This free Sky Abstract powerpoint background is a nice abstract design that can be used in technological presentations, innovation presentations, but also it can be useful for astronomical presentations.

Skull Implants X Ray Design is a free security background template that contains radiographs over the dark background.

Lovers Holding Hands powerpoint background is a lovely background design for your love presentations.

Red Love Cookie for your Powerpoint background is a simple love design background that can be useful for Valentine's Day presentations.

Equinox-Perigee Moon powerpoint template is a free abstract background design with the moon and stars images over the purple style background that can be used for astronomic presentations