You will need: Card, pipe cleaner, glue, tinfoil and a permanent black felt-tip pen.
If you only have tinfoil - use that to make your snake shape.
Instructions: Cut a strip of card a bit longer than a pipe cleaner. Fold the card in half and stick the pipe cleaner in the middle to make the card bendy. Make the shape of a snake's head and tail and stick them to the card. Wrap the card in tin foil. Then use the permanent black marker pen to draw a scale pattern and give eyes to the snake's head.