I have found the best ways to refresh and renew myself is to travel, teach on my own terms privately, and to take an art class in something I know nothing about. In my case, I took a class in glass blowing with a former student of mine, Jessica Schimpf, who is now the proud owner of Mantra Glass in Denver Colorado. (If you're ever in Denver, try it!)
Jessica was one of those students who is someone I now call a friend, and I am very proud of her accomplishments. While in school she was fearless, taking welding shop class with "all the boys" and holding her own, and often besting them at their craft. She found her calling later in glass, and when I knew I would be in her area, I scheduled a class. Teacher becomes student!
If someone asked me to do them again, I would charge at least $8000 knowing the amount of time, energy, materials, etc. it took to do, but I have a sense of pride in saying, "I did that!" Once the windows were completed, several other projects followed, and that enthusiasm translated into my classroom as well. They were excited because I was excited. I shared my projects with my students, and assured them, there's always something new to learn!
Share your own experiences below. What class or experience has invigorated your artistic spirit?