Just recently changed my wallpaper to this:
Recently learned from a YouTube short that
a 4K version of Bliss, a wallpaper for Windows XP, existed, and since I loved Windows XP growing up,
I just had to get it. So I did, and although I tried quite a few wallpapers, this was the one I settled on, and I am very pleased with it. 😎
Prior to that, I had this:

While I liked it, especially since it was easy on the eyes, I had been using it for a while now, and I was ready for a change. Lately, I have found that the change in wallpaper has really helped my mood anytime I use my PC. So I'll probably change my wallpaper every couple of months now.