You will need:
lightweight cardboard
brown construction paper
notepaper cut square
How to:
1) Glue light brown paper onto the piece of cardboard.
2) Draw an acorn shape on the cardboard and cut out.
3) Draw and cut out an acorn cap shape from a darker piece of
brown paper, and glue it to the acorn.
4) Add lines with a black marker to the acorn cap.
5) Staple notepaper to the centre of the acorn.
Source: York Summit District Crafts for Beavers