fellow designers,
I'm working on a toolbar, and all the triggers use only icons. One of these triggers opens a modal where users can choose an icon. However, I'm unsure about the best shape for the icon representing "Icons." In summary, what's the ideal shape for the "Icons" icon?
I understand that there are similar questions (like this one →), but none of them helped me figure this out.
Any idea or suggestion is hugely appreciated!