Does anyone know of a simple, battery powered state switch device for either Matter, Homekit or Zigbee? It should NOT be a wallsocket and specifically needs to keep a permanent on/off state.

My current plan is to be able to set an "On Vacation" state and base my automations around that but other usecases are possible as well.

I used to have this using a virtual switch in Homebridge that ran on a Raspi but this thing was too maintenance heavy and I would prefer a less hacky solution.