Are you looking for free icons for Keynote? Pictodeck Icon Set is a collection of over 700 pictograms in vector format supporting transparency. Being in vector format you can re-scale them to any size without loss in quality.
The icons are from four different sets: PICOL, Android Icons, Pictoico, and Freshpixel. You can freely use it for both your private and commercial projects, including software, online services, templates and themes. The set may not be resold, sublicensed, rented, transferred or otherwise made available for use.