This origami bear head bookmark is designed by Klaus-DieterEnnen and isn't very difficult to fold. Duo-coloured paper with brown and black might work out very well I think. Brown for the head and black for the little nose.

The diagram starts with a square base (Instructions).

Model Details:

Model: Bear Bookmark 

Creator: Klaus-DieterEnnen

Difficulty Level: Low Intermediate

Paper Ratio: Square

Paper Size: 5 inch squares

Model Size: 3.5 inches tall and 2.75 inches across

Diagram: The Origamist - Klaus-Dieters Origami Site