Universal remote control idea

I am looking for a way to use a simple comfortable couch remote control to some basic homey task.

The scenario is for example wanting to adjust volume of different Sonos speakers without having to use the APP. I am looking for for example IR/ Bluetooth / Zigbee remote at where i can have phisical buttons to program my self. I relally im looking forward for a remote at where i can adjust every button as a trigger.

I dont want a device with 6 buttons like the ikea remote or a KAKU AYCT-102, I am looking for an alternative to logitech harmony