Signing letters, preferably in a classy way

I like to keep an eye out for classy, fun or otherwise good ways to sign email. Yeah, there's always nothing at all, or a twiddle before my name, or "Thanks," but it's nice to keep an eye out for others, because what do you do with those halfway-professional situations?

I had a colleague once who signed off with "Warmest Regards", and that was pretty good. At about the same time I encountered "Be well," and I liked that too, but I was never sure I was enough of a nurturing type to pull off either of these.

You can't get away with "Namaste," unless you're a yoga teacher. But I have been doing some low-level community organization stuff trying to get various yoga/circus people together, and I signed those "Playing hard," because I originally wanted to say "Play hard" but wasn't sure about signing off with a command to people who are mostly my teachers.

Today I read about someone signing with "Stay true" and I actually really like that.

(ETA: there's also someone who signs with "Onwards," I think the head of some company.)

What do you use? Have you seen any great ones that you don't use?

yours - sincerely - hugs - xo - respectfully - love - cheers,

flexagon