Tonight when we got home from our night and day away from home, you noticed that a few lights were on inside. You asked if someone was already home, and dad explained that we left some lights on so it looked like the house was occupied. Of course you wanted to understand why we would leave lights on, and dad told you that the lights keep potential robbers away.
I wasn't exactly sure if I wanted to enter into a discussion about burglars, but here we were. Since it was not my idea, I allowed dad to attempt an explanation without scaring the, uh, crap out of you. The idea that someone could come into our house and be here, uninvited, much less take any of our stuff creeps me out plenty; I chose not to be the explainer this time.
Anyway, after the discussion and going round and around -- yes, people could break in, but no, it probably wouldn't happen and, yes, that's what the security system is for but, no, you shouldn't be afraid -- you set to work on a project.
After 10 minutes or so, you came into the kitchen with a note for any potential robbers. It is written on adding machine tape and you insisted that we post it on the door. According to you, it says, "robber, don't come into our house. I don't want you to take my work. And Myra. She'll run away, so don't come in." Additionally, you want to create a special piece of artwork for any potential robber to take instead of something else he or she may want. Your reasoning is thus: if you make something nice for them (a painting, or even some nice needlework!), then they won't want the other stuff...right? Right?!
You seem to understand that sometimes people don't have what they need, and so they may do bad things to change that circumstance. I think it's lovely you believe that the power of the written word--and your own creativity--could help turn that negativity away (literally) at the door.