"If your job was to find precious diamonds for a jewelry store, where would you go to find them?  If your job was to locate precious gold, where would you go to find it?  (answer; in the ground).  Well, the words of our prophets are more precious than gold or diamonds and today we are going to go looking deep in the ground to find some of these precious gems..." (Anne Box)

I got a big plastic container and lots of dirt.
I thought of stories from old time and latter day prophets.
Then I tried to think of things that I had in my house that I could use to go along with the stories.
I had pictures displayed about each of the people that I was talking about.
The kids would come up to the front and use my little shovel to dig a treasure from the dirt.
They would look at what they dug up and then glance at all the pictures and try to figure out who the treasure belonged too.
Some of the kids could tell me the exact story and I let them do that if they could.
But some of the stories I had to tell for them and some of the parents that day, who were visiting, even helped with the stories.

Lehi: a little plastic tent or a compass (in a ziploc bag), representing taking his family into the wilderness.
Nephi: a iron bar, representing the iron rod
Brigham Young: a pair of boy Barbie boots orA little wagon. This represented Brigham Young and crossing the plains.
Moses: a stick
Jonah: a whale
Abraham: A Knife (toy one)
Noah: two amimals tied together
Pres. Hinckley: a walnut. That was for the walnut tree that grew in his backyard. The tree has been used to build the new podium in the new conference center.
Adam: a toy apple
Daniel in the lions den: a toy lion figure.
Joseph Smith: a little Christmas decoration of an angel holding something gold that I thought could be gold plates. This was to represent Angel Moroni and the plates.
Lorenzo Snow: I rolled up some play money, supposed to stand for tithing.
Prs. Hunter: Picture of a temple in a zip-bag. Prs. Hunter asked us to go to the temple.
Ezra Taft Benson: a Book of Mormon: Ezra Taft Benson: Emphasized reading and studying The Book of Mormon
Spencer W. Kimball: he emphasized that we should keep a journal
 

If you want to make it a combined ST sing some songs that relates to what you talk about. Conny H.