Q&A for How to Make Homemade Weapons out of Everyday Objects

It can penetrate paper and dig into plywood about 3 cm at close range. It can shoot really far, but with good accuracy, probably 20-30 m.

Cover the tip of the arrow with foam or something that covers the sharp end, like a suction cup.

No, this is just for play.

If you can't wrap paper around a pencil, tape it up then make more (each one slightly bigger than the last) fit them, on tape it up again and then tape the two rolls with one on top of the other. Cut part of the top one off, then cut a hole in the back half of the bottom roll. Make a trigger from paper and fit in this gap. It must fit snugly. Then make paper arrows.

A wooden ruler or some wooden chopsticks could make a good alternative.

You likely won't kill him like a real crossbow because it doesn't have the power, but it can still hurt his eyes so to be safe, you must not point it at any one.

Chopsticks or wooden dowels from a craft store should work.

No, probably not because the it's designed for pencils and pens. A ball would likely bounce up, not shoot forward.

You don't, because it's a crossbow. They don't have stocks. If you want, just roll some more paper and tape it to the back.

Yes, I have seen The King Of Random do it. If you're not sure how, watch their video on YouTube for instructions.

20 to 30 meters with good accuracy. It is pretty powerful if you make it right.

A bar of soap in a sock could be an effective weapon (but at close range only). The butter would probably not be hard enough.