Have you ever read a book or watched a movie where the people in it have a secret code? I have, and I've created one myself! It's fun and easy.
First, get some friends or family to do the project. Or, do it yourself!
Think of what pictures should stand for what letter. Let's say...hmm, a triangle stood for P? Or the sun stands for L?
Now, write it out on a piece of paper. If you are doing this with more than one people, you may want to make copies to give to them, until everyone memorizes it.
Here comes the even funner part! Write letters or messages to your friends and slip it in their door, using the secret code. Then they can crack the code, to see what your saying! Even if your doing it with someone you live with, like a sibling or your mom, you can leave notes around the house, or get a letter and write your address in both places. Add a stamp. The mailman will see that its from your house and is going back to your house, so he'll deliver it to your mailbox! (Believe me, I've done this. It works! Leave it in the mail, and wait for your family member to get it). If your leaving a note, put it somewhere you know they'll find it, like in their drawer or under their pillow.
Enjoy secret coding!