This idea just randomly popped into my head today...don't ask how :) Most of it will be carved out and won't be as stupendously fancy as a Swiss Army knife of course...

Step 1: Materials

-a popsicle (or two) -a couple of craft knives (I stick with my little penknife) -a pen with removable inner workings -duct tape/hot glue/white glue/whatever that would hold something together tightly -anything else that you would like to add to the jumble... -pencil is optional for designing the layout