You can do this with a Navigation component and custom css, but I would like to see a button set that collapses into a hamburger icon when there isn’t enough width to display all the buttons. 

My use case is that I’m switching from a table component that just uses filters and global actions to control other tables on the page, to a filter set component. How do I replace the global actions part of my data-less table component? I suppose for now I will use a table component that ONLY has global actions. 

So, if not a collapsible button set, then maybe a dropdown button set, that looks and feels like the global actions in a table, letting you set a primary button or not, change the order, etc.