I'm starting to re-familiarize myself with Maya, now that I'm trying to expand my "tools" so I can pull in more VFX work.

At the moment, I'm trying to figure out how to make the edges of my planar shapes "thicker" as the attached image shows.

I also want to add icons to the shelves. I remember there was some technique where you select the command from a drop-down menu while holding some keys as you drag it to the Shelf. But, I'm on Mac now, so I'm guessing that's slightly different, too. Thanks in advance.