"3D" relief maps can help tell any story, and they can be made out of many different materials such as salt or cookie dough. The colors can be part of the dough or painted on top. They can be composed of paint or food coloring or different colors of icing. From a teaching perspective, it is important to keep the "making" as simple and quick as possible so that the message is not lost in the doing.
It's common to see maps of "countries" or regions like the following, but keep in mind that a map can also zoom in on a specific area where a story is being told. The Sea of Galilee, or Garden of Gethsemane, for example. (Gethsemane is on the slopes of the Kidron Valley across from the Temple and sits at the base of the Mount of Olives for example.)
1. Holy Land Salt Map Project
Photos and instructions at https://biblebeltbalabusta.com...dough-map-of-israel/ Could be done using cookie dough and icing as in the 2nd one seen below...
2. Cookie Dough Map Project
Photos and instructions at http://adventurekids3.blogspot.com/ (this project did Egypt only, but the idea could easily be turned into a Holy Land or Exodus map with yummy results).