I have pitot heat & parking break as the rightmost two switches (easiest to hit by muscle memory), and they get used very frequently. 
Then some de-icing and interior lights that come in handy for IFR flights but come up less in daytime VFR.
I do find that the switches get easily blocked by the levers when full forward.
The autopilot on the Bravo is kind of weird, you use the left dial to select which mode to adjust variables on, then the right dial to +/- the value. The buttons in the middle act as mode toggles (and if lights are working, the associated lights will light up when the mode is active). There should be some good tutorials out there with more detailed usage examples…