Phones, phones, phones
Kids at this age are always mimicking their parents' behavior. Luke mimics everything we do lately, such as eating, cooking, reading, hitting the dog (oops), and much more. His favorite activity to mimic, however, has always been talking on the phone. I really have absolutely no idea whatsoever where he might possibly get it from.
In the age of wireless non-flip phones, pretty much any toy can function as a phone substitute. Take it from Luke.
Here is a short video of Luke trying on his outfit for Uncle David's wedding. Sam thought he looked like a businessman and lent him his phone to complete the picture. Snapshot of the future??