Freepik helps you to find free vector art, illustrations, icons, PSD and photos for using in websites, banners, presentations, magazines, etc...

Freepik offers a colossal collection of vector art, illustrations, SVGs, PSDs and stock photos. Everything is free and categorized neatly so you should not have any problem finding what you need, although you might have a hard time choosing, since there are over 1.4 million items to date.