Mark 14:3-9 She has done what she could; she has anointed my body beforehand for burial. (Mark 14:8 ESV)
As Mary anointed Jesus with the costly perfume people grumbled at the apparent waste of such an action. Jesus chastised them, declaring her sacrifice to be a beautiful and selfless act of worship. She had done what she could with what she had. It was her way of offering all that she had to God.
What does God ask from us? Better yet, what has God already done for you, or given to you, that He might be asking for you to use for His Kingdom? Mary did what she could, whatever she was able to do she did for Jesus. Furthermore, her faithful act of worship had a part to play in God's work of salvation.
What can you do? I think it's high time that we in the American Church stop showing up to sponge off of the insight and experiences of the few. God still speaks to us, He still reveals Himself to our hearts, He still challenges us to take up His cause. What are we going to do about it? When will we cross the line and stop merely being consumers?
Mary did what she could. I don't know what we can do, but I think it's time we found out.