I have left several jobs so far in my career. Some were because I was moving and other times it was for new opportunities I wanted to pursue. I always try to leave on good terms and handoff everything I am currently doing.
This is my list of things I personally do before my last day (in addition to anything listed in an offboarding document or process)
Return extra office supplies back to the office supply cabinet
Be at peace with the fact that the glitter will remain no matter what I do
Hand out business cards to those I want to keep in contact with
Make sure all work in progress is checked in and pushed out to version control
Recycle old notes and documentation (destruction completed as per company policy, check policy beforehand to determine if you need to shred anything)
Leaving a job can be stressful and exciting but that is no excuse for accidentally leaving your favorite Golden Girl figurines behind.