Punch holes in a construction paper christmas tree, then let kids glue tissue paper to the back so it looks like lights when it's hung in the window.
Cut 2 paper plates into 3 triangular pieces and paint green. Paint a paper towel roll brown. Cut slits in it about 1/3 of the way up on one end. Spread and tape to another paper plate. Glue tree pieces together and decorate with button,gems,sequins or paper dots. Add a star at the top and glue onto the paper towel roll.