If you have a Google Home device (normal, mini, etc.), you can use "hey Google, where's my phone?" and it will ring your phone. (I don't remember what setup you have to do in advance, but I use this all the time.)
If you have a Tile device paired with your phone, you can push and hold the button on the tileTile and it will make your phone ring if it is within range. (Tile is a tracker that you attach onto something like your keys and install an app on your phone--then when you have lost your keys, you go into the phone app and ask the Tile to ring. But in this example it also works backwards, when you can find your Tile but can't find your phone.)