hehehe
ok here's what I did today:
at work, I played a little prank on my friend's PC, first I took a screenshot of the Desktop with all the icons
right click on the Desktop -> Arrange Icons -> Show All Icons
now all icons disappeared
I then hid the Taskbar
and I set the picture that I took of the Desktop as a Wallpaper
when she's back she tried to open a file and guess what...?
that was hilarious seeing the reaction on her face
HAHAH! that was great