Adhesive tape
Glue
Two cardboard tubes (e.g. empty toilet rolls)
Torch
Scissors (suitable for cutting cardboard)
Aluminium foil
Sturdy but bendable wire (35-50 cm long)
Styrofoam ball the size of a large orange
Ping pong ball (or a Styrofoam ball of a similar size)
Large strip of cardboard (about 60 cm in length and no less than 20 cm in width)
Stack of books or magazines