Idk if it really counts as an accessory, but I used to use Synergy when I had to use a company Macbook. I have the macbook on one side of the desk connected to one monitor, and my PC on the other side connected to the other. I found docker performance to be way better on my PC than on the 8gb RAM M1 Macbook pro I was given, so I tended to do everything I could on the PC and then push code using the macbook