IconStore - Free icon packs by first-class designers
Open Peeps - A hand-drawn illustration library.
Christmas HQ - Totally free holiday icons, images, borders and fonts
Control Illustrations - 108 free flat illustrations with customizable characters
Merry Christmas Design Assets - Over 40,000 high-quality Christmas assets from Iconscout to bring the spirit of Christmas to your designs.
Handsome Illustrations - Create unique illustrations for websites & applications.