Rocks in My Pocket

I've been thinking about rocks lately. (No, not diamonds, but they certainly would be appreciated!) I suppose this is a convergence of several ideas, so bear with me while I weave them all together.
I have spent this past week trying to express my affection for a good friend who is celebrating a birthday today and who has been a great support to me through the last several years of personal struggle. Words escaped me, which is a painful place for any writer to find herself in. What I finally came up to was this:
"Stone upon stone we build our lives on His firm foundation, with living stones creating walls to keep the harsh storms of life at bay, to shelter us from the wind and the rain. Every stone fitted together by the Master Builder, etched with the gifts we need. No stone can be removed without weakening the wall, and when one must be removed the Builder shores up the wall and seeks a perfect replacement."
1 Peter 2:5 says; "you also, like living stones, are being built into a spiritual house". I am ever grateful for those living stones who surrounded me, covered me when I needed shelter and protection, and who helped give me a solid place to stand when I was ready to venture out again.
Throughout the Old Testament God's people used stones to create altars and other monuments to remind them of God's provision. To this end I have a stone my little girl found last summer in the coulee on my desk and on its face I have inscribed 1 Samuel 7:12; "Then Samuel took a stone...He named it Ebenezer, saying "Thus fan the Lord has helped us."" On the other sides I have begin to mark various other scriptures that remind me of God's promises and provisions in my life. A tangible reminder against those moments when doubt, or fear or sorrow begin to whisper. We all have our ways of remembering. I used to keep two small stones in my coat pocket for the same purpose. Those stones I picked up on a beach on Vancouver Island. I was on a holiday with my first husband but I was feeling quite alone and neglected. I don't know why I chose those particular stones. They are not unusual or remarkable in any way, but finding them in my pocket always made me smile, reminded me that even when I felt most forgotten and alone I was not.
How do you mark and remember what God has done and promised to do in your life? What is your Ebenezer?