Country bear jamboree
Aladdins magic carpets
Barnstormer
Stitchs great escape
Mickeys philharmagic
Seven dwarfs mine train
Voyage of little mermaid (though this is at Disneyland resort, not in Disneyland specifically)
It also has a crappier version of pirates, space mountain, buzz light years Astor blasters, and tiki room.
Overall, Magic Kingdom is lamer than Disneyland. But with a 3 year old and only the ability to visit one park, Magic Kingdom is probably the park for you.