What are some good alphabet lesson object ideas...?

Use the names of the children in the class as much as possible. This will give the letters and sounds very concrete meaning for the children. If A is for Andrew and Alexis, they are going to remember it much faster than if A is for ant. Then try to find common items that may even be in your classroom for the other letters. Stick with things you know the children have experienced or are interested in. They may not have experienced an octopus, but kids love them for some reason!