Shameless self-promotion:
I didn't have a light/fast tool for inserting music excerpts in Word ... so I've written a LilyPond Add-In. There are still bugs, but now pretty stable!
Free edition now public at
dentonlt.com/mslily
Expecting to release a Standard/Full Edition before September. Long-term plans are to include Mac, Google, and Office365.
Happy music-making ~