Grabbing
Around Halloween, retailers often sell stuffed toys fitting the holiday. Use the toys to play games with a baby to help with their development. Set three or four brightly colored, baby-friendly Halloween stuffed toys around the baby. Encourage the baby to crawl or walk to the items and grab them. Gradually increase the distance of the items to the baby as his skills improve. For example, if it takes no effort for him to crawl and pick up a ghost, move the stuffed ghost back six inches.
Throwing
Small toy pumpkins work well for baby throwing toys. After showing the baby how to throw, encourage him to toss the toy pumpkin to you. You can also use ghosts or any other easy-to-throw Halloween-themed toy. As the baby's throwing arm improves, make the game harder. Move back two to three inches to test out the child's throwing skills. Have the baby utilize this skill at a Halloween event. For example, if you are helping out at a haunted house, the baby can help you throw items against a metal sheet to create scary noises outside of the house.
Cups
Help the baby practice logic by hiding items. Party supply stores sell orange and black cups around Halloween. Place a Halloween baby toy inside one of the cups and turn it upside down. Arrange two empty cups around it. The baby has to find the item. Make sure they see what you are doing. While it will take a while before the baby understands the trick, watching you perform it helps promote creative and logical thinking. You can also set the cups upright, fasten them to a surface and have the baby throw items into the cups.
Masks
Utilize the costume part of Halloween to make a game for babies. Use various Halloween masks to play games like peek-a-boo. Pick masks the baby won't find scary, like clowns, animals or a silly ghost. With help, the baby can also hide behind the mask. Try reading a Halloween story with the masks. Use a different mask and voice for each character.