I just finished making two dozen of these adorable mini-cupcake ornaments! They were time consuming, but worth the effort.
For this project, I used miniature foil cupcake/candy liners, 1.5" styrofoam balls, white glue, hot glue, artificial snow, diamond dust, artificial floral berries, and embroidery floss. I applied the white glue to the balls with a brush, then rolled the balls in the artificial snow and sprinkled them with diamond dust. Once they dried, I ran a line of hot glue along the top of each cupcake liner and placed the "snowballs" inside. I then applied a dot of hot glue to the top, set in the floss, then added the berry.
This would be a fun classroom project, with the teacher being responsible for the hot glue factor.