Very important points there. Great job.
I totally agree with you @gavvet.
I want to point out a very neglected but most impactful way to appreciate someone.
Nothing says "I appreciate you" more than an investment of your time, especially because everyone knows how busy you are. I was blessed with an incredible mentor and boss during many of my years in corporate. Lisa made certain to spend time with me in and outside of the office on a regular basis. Knowing how much she believed in me inspired me to be at my best at all times. The tangible gifts I received from other peers and bosses are long forgotten, but Sharon's gift of time will forever be remembered and valued. Think about what's most important to others and invest a bit of yourself to make it happen.