Openclipart has many free images. Here is a collage i made.
Images are Free for commercial and non-commercial use. All clipart with transparency, scaling to any size you want.
The Openclipart library, sometimes abbreviated as OCAL (Open Clip Art Library), was started in early 2004 by Jon Phillips and Bryce Harrington, developers for vector graphics software Sodipodi, and later its fork, Inkscape.
Images are Free for commercial and non-commercial use. All clipart with transparency, scaling to any size you want.
The Openclipart library, sometimes abbreviated as OCAL (Open Clip Art Library), was started in early 2004 by Jon Phillips and Bryce Harrington, developers for vector graphics software Sodipodi, and later its fork, Inkscape.