My daugher loves the Wizard of Oz so we had a Wizard of Oz party for her.  I made a 'yellow brick road' leading from the sidewalk all the way to our door.  I used a large piece of heavy construction paper and cut out a stencil of a brick design (5"x7" 'bricks').  I then mixed baby powder with water and a small amount of yellow food coloring.  I sponged this on the stencil, lifting and moving my 'brick road' to the house.  I made a sign that said 'Follow the yellow brick road to Kaylee's party' cut on a green piece of cardboard in the shape of the emerald city.  The baby powder 'paint' just brushed off with a broom.  It was super easy!  We used inexpensive gingham material from Walmart for table clothes (you can even  rip the fabric by hand and tape it under the table(s).     I also bought a Wiz of Oz mask booklet from Amazon.com that had 8 paper masks of the characters. I made each mask (it took a long time so you'd have  to do the a couple of weeks out) then put the masks on wooden dowels and used them as decorations during the party.  After one of the games, I had each child (there were 8) draw a name of the character out of a basket and that was the mask that he/she got to take home. You'd have to ensure that the two/three 'girls' masks are picked by girls though...Dorothy, Glenda and perhaps the witch so that some little boy doesn't get teased.  The author of the mask making book was Dick Martin.     I also did a game of putting together the scarecrow.  I made two scarecrows of heavy construction paper made from 14 pieces (head, trunk,  arms, legs, etc.) that were connected by brass brads.  I marked the two scarecrows with either a red dot or blue doton the back of each piece then scattered the pieces in the yard.  The two teams had to find their pieces and then put their scarecrow back together again before the other team. Obviously, a game for older kids or lots of help by parents.