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I use Picos to control night-stand/end-table/floor lamps with Sengled Smart Bulbs. It is really great to be able to smoothly dim these smart bulbs just like all of the other Caseta dimmers i have installed. Makes for a consistent user interface, which means a happy family.
I also am using a Hampton Bay Fan Controller, and use the Pico to control both the fan speed, as well as the fan lamp. Again, a consistent UI for family and guests alike.
Other uses include changing the mode of the house, or arming/disarming Hubitat Safety Monitor, etc...
While Pico remotes aren’t magic, they are great due to their versatility and the fact they can easily be wall-mounted, have table stands, and can simply be stuck to a surface. The 10 year battery life is nice as well.