You can specify a window to show on all desktops (or all windows from the same app). Just right-click the window from the Task View screen (Win + tab)

My mom gave me a Simpson’s T shirt when the show had just come out. Everyone was wearing Bart Simpson shirts at the time and I am somewhat anti “wear what everyone else is wearing” so I put it in my closet on a hange and said I won’t wear this shirt until the show ends. It has been hanging there since like 1990, never worn. I am ready to wear that shirt already. I am good with this.