Free for personal use. Main theme is children-related. Well organized and fast-loading site. Main categories are animated, backgrounds, buttons, dividers and pictures. Most are totally free.
Usage requires only a linkback.
Great site from Great Britain. ECE Icon Repository - Wide variety. Includes icons of Zippy the Pinhead, a gopher, previous and next buttons, bullets, and patterns. Use of these images only requires that you link to the site. Debby's GIF Animation Page - Over 100 Pages of GIF animations.