This is what you do on a hot summer day, when you are very bored. Make sure you have a pool and soap near by, because you will get very messy. Check us out on youtube at Narfert152
What you will need is some paper, different colored markers, tape, and more than 1 person.
Then make weapons out of paper, by rolling the paper around the marker, and then securing the marker with tape. Then go outside and mark each other up with markers. Have fun.