Mary could have just given the perfume to Jesus. It was worth a lot of money, and surely it would have been a precious gift as it was.
But no. She didn't just give it to him.
She broke it, poured it on his feet and head.
Yes, the Bible explicitly states the symbolism of this act - "She poured perfume on my body beforehand to prepare for my burial" (Mark 14:8). But I think it relates to other things too.
Like our lives.
How often do we wrap our life, our heart, carefully, and 'give' it to Jesus? "Here, Lord. See, this is my life, neatly packaged. Isn't it precious? There, go put it on your shelf and look at it with pride and pat me on the head for being so sacrificial."
How rarely are we like Mary, actually cracking our life, pouring it out in repentance, awe, adoration, true sacrifice? How rarely are we willing to really let Jesus have our lives, use them as He wishes? How rarely do we let to fragrance of our sacrifice drift throughout wherever we are, until people say "What are you doing?!" How rarely do we proclaim Christ's burial (and resurrection) with our lives?
"But I will rejoice even if I lose my life, pouring it out like a liquid offering to God, just like your faithful service is an offering to God."