A witness between us

Joshua
The Reubenites and Gadites had land on the other side of the Jordan, opposite that of the rest of Israel.  When they finally went to live on this land, they built a large altar to God, but when the other tribes saw it, they thought it was to foreign gods.  But the Reubenites and Gadites set them straight, saying that they had built this altar, not to make sacrifices to foreign gods, but to remind the people on both sides of the river that they all followed the same God.  Joshua 22:34 says: "And the Reubenites and the Gadites gave the altar this name: A Witness Between Us that the Lord is God."
This altar is a great idea!  I think we should consider have some sort of icon, or altar, or something that can be put in your work place or home that will remind you and those who visit that the Lord is God and you serve him.