Kitchen appliance, basically. Timer, play music, listen to news, add stuff to my shopping list.
The kitchen is the perfect spot for it because my phone and tablet are usually in the living room or on their chargers in my bedroom, and Siri doesn't work anywhere near as well in a big, noisy area like a kitchen. The microphone is so much more accurate and reliable than the Apple Watch on my wrist (which doesn't say much, because the Watch is so bad at this sort of thing.)