When I got up this morning, my wife had thoroughly demolished Christmas — the tree, decorations, wreaths, holiday bunting. Nothing festive or seasonal had been spared. Not to be accused of total sloth, I set about making over our family’s three Macs with a more subdued Winter themed desktop and screensaver.

Thereupon, you fill both needs by visiting MacDesktops, which features a plentitude of Winter pictures. To install an image as a desktop, select and open the appropriate resolution.

Once it’s open in your browser, simply right click (Control + click) on the image and select “Use Image as Desktop Picture.”

A screensaver, too

To create a slideshow, you’ll need to add some to your iPhoto Library. I’d suggest at least 10 of the same, appropriate size (i.e. your Mac’s native resolution) — open the desired image in your browser, right click on it and “Add Image to iPhoto Library.”

You’ll need put these images in a folder inside iPhoto. Create a New Album (⌘ + N) and drag the images into that.

Next, you’ll need to select that folder as your source for the screensaver

System Preferences > Desktop & Screensaver > Screensaver

And, now, you’re ready to go…

See also
— Get the SnowFall screensaver for OS X
— Mac apps: Top 10 + 3, best OS X screensavers
— Three more Star Trek screensavers | FairerPlatform
— System 47: An LCARS screensaver | FairerPlatform