you could have kids put there hand prints on fabric my grandsons kindergarten class did this and made Christmas Wreath out of prints and they wore them for program. IF kids put hand prints palms together it would look like butterfly.They would make cute pillows. Also sock puppets are fun out of those socks that no longer have a match ,the crazier the sock the better and then maybe a skit about recycling so they can show off puppets they could even invite parents,The cutest project my son did was in kindergarten They had to make some kind of vehicle to sit in for a drive in movie in class .We helped Quint make a tank and used all kinds of boxes and wrapping paper tube left over from Christmas. That was a fun project for all the family You should have seen what kids and parents came up with Quint and friends played in that tank for along time.Kids will love what ever you do.