Goal and options: How do I fix the wires on the cardboard ?
output answer: Cut 1 inch pieces of duct tape with you fingers and stick them where the wire and the cardboard touch.

Goal and options: How to bend coat hanger wire for mini stove.
output answer: Use pliers to bend coat hanger wire into desired position.

Goal and options: How long should I make a magic wand?
output answer:
A magic wand should be about 32 centimeters in length.