/3/ - 3DCG

>>688747
It's possible to not use the other hand for the keyboard altogether if you use something like pic related. Razer is gay as fuck, but having a mouse with all those hotkeys has been actually pretty useful. They're programmable, and can do combinations as well. The program is pretty much bloatware though. I imagine there's other brands that make similar mice though so you could check those out.

As for stuff that you wouldn't be able to fit on the mouse. I think the software allows you to have different sets of hotkeys that you can toggle between. Blender also has a quick menu that you could add pretty much any operation to, even modifiers and shit. Just map that to the mouse, and then assign whatever to the quick menu, and you just added a shit ton more functionality to the mouse. Other programs won't have the quick menu, but you can still use the different keysets and just do it all that way.

Just make sure to take breaks often with that mouse.