feature I've never seen on "smart" speakers: turning itself down to a reasonable volume in the morning if you had it cranked up late at night instead of blasting at the same volume when you ask it to play something when you get up
At best tangentially related but my sister and I shared a car throughout college and it was back when the CD player reigned supreme. We'd burn "mixtape" discs of the music we liked and often they'd get left in the stereo a while if the other person liked it. My sister thought it was funny to put "the circle of life" from the Lion King as the first track on one of them and would belt along with it.
One night I pulled into the driveway and was feeling like a gremlin so I cranked the stereo all the way up, and left it set to play at the beginning of the CD. The volume and location on the disc persisted across turning the car off and on, and my sister would get NAAANTS INGONYAAAAMA BAGITHIII BABAAA at earsplitting levels when she went to school the next morning.
Except when I came down for breakfast my mom threw my keys at me and was in a bad mood. Apparently she'd borrowed our car to get some coffee and run some errands at 6 am. Whups
