I normally see the clipboard being used to store stuff that you copy. I didn't know it stores cut stuff too.
Also I'm aware that pasting something doesn't remove the thing from the clipboard. I just made it like that so a player won't get to repeatedly spam blocks or something.
I pretty much just made them named like the keyboard shortcuts to fit the theme. I have already planned to make the game in a similar fashion to what you suggested (not making it related to keyboards and stuff).
Thanks for the feedback and thanks for playing!