I know that not everyone appreciates Powerpoint. There are other (and better) presentation programs. But it meets the few presentation needs that I currently have. But there's nothing to say that you can't use these free weekly Powerpoint background images that I create in another presentation program. Or use them as desktop wallpapers. Use them in art projects, as book covers, print and frame them as cheap artwork for your apartment. Use them as you will; I only ask that you share them freely and that you tell others that you found them here.
For those who may like to know these kind of details, this photo is the result of merging a photo of the purple wall in my daughter's bedroom, and a picture that was an accidentally snapped flash blur taken in a cave.