With my son, Damien's help, we have two near perfect SP's to offer the world.
Not making the cut:
Panel panel = Board board.
The meanings are different but the derivation the same.
Technically a pass but somehow unsatisfying:
UPDATE March 2015:
First a pair whose connection is a bit obscure but whose rhyme is sweet:
"Rain Reign" would be a "Grade-A grey day".
And (drum roll), I woke from a dream this week with a perfect stink pink:
To "sight a site" is to "spot a spot" and to "see a scene".
(My son gave came up with the third part..)
UPDATE May 2015
Speaking of the top lion: Main Mane or Pride Pride.
Contributions welcome. I'll add them to the post.