Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
Christmas HQ - Totally free holiday icons, images, borders and fonts
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
IconStore - Free icon packs by first-class designers
Wallpaper Wizard - Wow-worthy backgrounds for Mac
3D Christmas Decorations - Deck the halls with 3D characters and ornaments