Here is how to make a self-proclaiming out of order object (SPOOO for short). Here's the slideshow of all the finished products I have made.
In this instructable, I will be modifying a camera.
Step 1: Figure It Out
Plan what you're going to do. Locate the viewfinder's other end on the front side.
I will use a white-out pen, but any thing like that (including sharpies) will do.
Step 2: Get Ready
Find your writing implement. (sharpie, white-out pen, grease pencil, phaser)
Get it ready.
Step 3: Write
Be sure to write backwards!
Step 4: Done
When your victim looks through (or if you wrote on the lens, takes a picture), (s)he will see "Out of Order" written over what (s)he sees!