My little one-and-a-half year old son made one that looks like this:
Yes, he made it himself, called it a "gun", and ran around shooting it with all of the appropriate noises.
More of his latest adventures include coloring my cabinets with markers, (THANK YOU magic eraser!), climbing constantly into my upper cabinets to reach some gum by moving the dining chair into the kitchen for climbing purposes, emptying the water cooler into the bottom tray so he can play in it, climbing up the back of my couch (via chair again) and jumping onto the seat cushion, and other interesting things of that nature that my husband says are sooooo boy. (I have to add that (much to DH's dismay) he also likes to wear shoes that clomp around, and in our house those shoes are generally pink and sparkly.) I would post a picture of that, but fear I would be in big trouble if I did. :)
In spite of all this, I LOVE love love having a little boy. Little stinker that he is, he is charming at the same time and has at least one house full of girls hearts on a string.