One of my favourite Gmail productivity hacks is to hide the inbox label with CSS. Instead of being tempted to find out what’s behind the (1) indicator I can safely search and process through my starred items oblivious to any incoming emails.

When I’m ready to return to the inbox I can simply press g then i.

.LrBjie .TK .aim:nth-child(1) { display: none; }

I use Mailplane to manage my Gmail accounts which helpfully supports custom CSS, although you can also use browser extensions like Stylish to apply userstyles.

Disclaimer: This will most probably break when/if Gmail updates its design.