Something I find rewarding is helping others in their careers. I am quite happy to conduct practice embedded software engineer or manager interviews, answer questions about engineering at Google or in general, advise on career planning, etc.
I keep a bookable calendar with two timeslots per week. I am in the Pacific timezone, and can set up special times more convenient for people in timezones far from my own. If the calendar doesn't work for you, you can contact me at denny@geekhold.com to make special arrangements.
Anyone is welcome, you don't need an intro or to know me in person. The sessions are conducted via Google Hangout or by phone. My only request for this is to pay it forward: we all have opportunities to help others. Every time we do so, we make the world a slightly better place.