Use CSS Grid to stack items, and visibility: hidden to hide/show spinner.
This approach allows the largest item to size the button, and keeps the button text accessible
Css Grid Stacking
Customizable Select Html
Programatic and Skill based Video Creation with Remotion
Glow in the dark stickers are the move 
15 years ago I attended my first Google IO
It actually lead to interviewing to work on Gmail mobile which I didn’t get hired for
This year my demos are in several IO talks! It all worked out 
Swag companies put in the most minimal effort and charge insane prices for these things.
Getting a custom made hat is more work but usually less $$ snd the quality is 100x better.