DIY - paper star - very easy if you can get hold of the kind of paper bags which are sometimes used for packing a sandwich. Just cut the open end into a outward pointing V, and then stick the bags together from the closed end in an upside down kind of t-shape. Then unfold carefully. If you don't stick the end bags together, the star can be put away flat until next year.
This is the gallery of my paper art. I adore modular origami technique, kusudamas and papercraft geometric objects. You can find here visual ideas, some diagrams and tutorials of my beautiful kusudamas.