Sometimes the hardest part of dressing a small child up for the Halloween festivities is coming up with a good toddler Halloween costume idea. Part of the reason for this is that not only does a Halloween costume intended for a young child have to be to the child’s liking. And parents know that little kids can be very particular. You can offer every Simba and Pokemon outfit in the store, but they will kick and scream to dress as a lamppost or some other nonsensical thing.