Are you all ready for something you wish you knew ages ago (or, in my case, a DECADE ago)? Open up a portal in your favorite instance and go to:
System Administration->Configuration->Additional Settings->Startup
Scroll down to "Terminal Prompt" and click 'Edit'. This allows you to edit what you see on your terminal prompt. You can change that to my current setting: 8,3,2
What does this do? It adds your instance name for your prompt. So now your prompt can look like:
DEVELOPMENT:USER>
Last comment 23 hours 16 min ago