The shareware version of Snow from Windows by Rick Jansen linked here doesn't work well with Windows 10, lots of image artifacting from (I assume) old Win32 display calls attempting to animate sprites across the desktop.
Looking for alternatives... found DesktopSnowOK which is freeware, small and portable, but doesn't seem to collect snow on top of the window frames :(
Oh my gosh! I miss that. Do you happen to remember the name of the program that allowed you to use a "hammer" against your screen which would result in the appearance of a broken screen?
I definitely had that as well at some point! Couldn't find it in my little collection of fun programs though. :( I also remember a Star Wars screensaver included with one of their games with Star Wars figures running around on the screen, shooting holes in your windows, etc...