The hamburger menu has evolved from a controversial design choice to a widely recognized icon, effectively serving as a hidden navigation tool. While users now understand its function, design risks remain, such as confusion with other icons and the ongoing interaction cost of hidden navigation. Best practices for its implementation include using the standard three-line icon, placing it in the top-left corner, and avoiding unnecessary styling.

The floppy disk icon continues to symbolize "save" in modern software, despite many users never having used a floppy disk. While it remains recognizable and effective in familiar contexts, the evolving nature of saving actions in digital environments may prompt designers to consider alternative icons that better reflect current functionalities. Usability studies show high recognition of the icon, but its appropriateness can vary based on the specific saving actions involved.