For a fun party activity, why not make tissue paper flowers? If it's a holiday party, you can do them in holiday colors (ex. red and green).
To make these flowers, take a sheet of tissue paper, fold it accordion style, secure in the middle with string*, then unfold. To see detailed instructions, visit Sew Sweet Stitches. You can make a vase of flowers or a garland!
*Note: You can use raffia or floral wire to tie them.