Actually, Magic Kingdom has many things you could do with a 14 month old, and I believe a child that age gets in for free. I'd have no problems taking a baby on Peter Pan, It's a Small World, Haunted Mansion, Cinderella's Carousel and stuff like that. I also think a 14 month old would love all the sights on Main Street and be fascinated by the baloons and toys so prevalent there. Also, I think that the fireworks would be excited for a baby, as would any of the parades. For rides that aren't appropriate for a baby, if you have two adults going you can do the child swap where one person stays with the baby while the other rides, and then they switch off.
I suggest that you check out the Disney World web site and that will describe all the attractions so you can check it out and make your decision. Whatever you decide, I hope you have a great time!
-Dorothy (LadyZolt)