You have studied in the creation of animated items and inventions as your artificer specialty

Elementary Animation

You have gained the ability to imbue the power of animation onto your infusions 

whenever you make an artificer infusion you can place the item under the effects of an animate objects spell, this effect lasts for 1d4 days plus proficiency modifier and using this feature while it is still in effect on another item will result in the other item losing this effect

Complex animation

Your study of arcane animation has widened your spectrum of control of animated objects

now you have gained the ability to better make use of magical items letting you activate their magical effects effects from up to 60 ft away and allow you to attune another creature to one of your attuned magical items for up to a minute but this requires the use 1 use of flash of genius and an action instead of the usual bonus action long command and concentration as if for a spell

Mini Animation

You gain the ability to summon animated objects on a larger scale than before

you gain the ability to cast the animate objects spell once per long rest but the number of animation points is reduced to 5 and the max size you can animate is medium 

Supreme Animation

You have perfected your ability to animate your artificer infusions

• You can apply you elementary animation ability to all of your artificer infusions at once
• your elementary infusions no longer expire after any length of time and can only be dispelled