here's some.
when u lose something ...
when u are looking out for a person/a particular word in a text ...
u feel like pressing Ctrl-F
when u are writing something on paper, u thought the only way to clean it off is to use the backspace key
when u accidentally missed out a certain phrase, u feel like pointing the cursor at a certain word and just type.
when u are trying to re-arrange parapgraphs of text, u feel like using the mouse to cut and paste.
when u are trying to move things in a room, u think of a com mouse and selecting things u wanna move and u just drag it along
when u see a spelling mistake on a written text, u see a red crooked line beneath