Your kids will quickly get into the spirit with this craft project: shaping a batch of mini sprites to use as party decorations or favors. For an even spookier effect, add these easy-to-make Paper Bag Trees.
Combine the flour, salt, and water in a bowl. Stir the mixture with a wooden spoon until smooth.

Divide the dough into 6 equal pieces and shape each into a ghost, flattening the base so it will stand up.
Microwave the ghosts on a plate one or two at a time for 20- to 30-second intervals until the dough is fairly firm (about 1 1/2 to 2 minutes in total). Let the ghosts cool (they can get quite hot).
Use a fine-point permanent black marker to draw on eyes and a mouth.