Stopped into Lowe's today and they have the Lutron Caseta Pico Remote for use with the Lutron Caseta smart home hub on clearance for $3. These are normally $23.95. Note that this is highly YMMV and likely ONLY reflected in store, as the Brickseek link indicated the regular price at the Lowe's where I found this for $3 (Aiken, SC). The Lutron Caseta system works with Google Home, Amazon Alexa and Apple Homekit when paired with a Caseta Smart Bridge.
NOTE: The description for these on the Lowe's site, while not wrong, is rather misleading. This is ONLY the remote and wall mount and is NOT the dimmer switch itself. The intended use for this is in scenarios where your light has a switch in 2 locations. You purchase a separate wireless switch and install it in one location, and in the second location you replace the switch with this remote that will control the dimmer switch in the other location. I have a Caseta dimmer and hub kit on order currently, and planned on mounting the remote that comes with my kit in the location of the 2nd switch in my home. So I ordered the bracket needed for that purpose from Lowe's and went to pick it up. Before picking it up I decided to check out the other Lutron stuff they had on display, which is when I noticed this on clearance. The bracket itself was about $6, but this item is an extra remote (which I can use on my Sonos system), the decora switch plate AND the same bracket that is $6 on its own. So I picked up a couple of these and immediately returned the bracket I had ordered.
***Lutron also sells an "audio" version of this remote that can control you Sonos speaker products. However, this is the exact same functional remote, just with different labels on it. So this $3 remote will do the same as the audio remote if you set it up that way. See this for reference: https://forums.lutron.com/showthread.php/3171-Use-ordinary-pico-to-control-sono [lutron.com]