When making a idiophone ( the single bar ) i had to make sure that there was two holes so that the screw could then be placed later on. With one bar make i duplicated it and make each one smaller, for higher and lower pitch.
The mallet was rather simple i just used a sphere and cylinder and place them together. I just need to attach them together for them to become one object.
Here is what the Xylophone is roughly looking like. I could use this but i want to create the fish one like i designed a while ago as it has a lot more character. So i now just need to model the fish head and tail and place them on either end.