Recreating the rock cycle I want to recreate the rock cycle using some item that can behave as a rock. The purpose of this is to get a point across to my students about how really there is a reason why the rock cycle is called rock cycle.

Most of them find rocks dull and uninteresting, so I was thinking about proving the rock cycle some other way. In a couple of hours researching I came across some surprising ideas, such as crayons, chocolates, wax, etc.

I wanted some feedback on how well you think I can get the point across of the rock cycle being a cycle. To them, thinking that something liquid, turn into solid, then gets destroyed, and mixed into something else, then melted again, is really hard to understand. Using something that does not take millions of years to form might be a better strategy I think.
Here's an idea:

You can use dark chocolate and white chocolate. Use a grater to create "sediments": layers of alternating grated dark and white chocolate.

Now heat them up just before melting so you can stick them together with pressure, preserving the layered structure. Now fold them. There's your "metamorphic" rock.

Then, just melt the entire thing to create some chocolate-lava flows. Grate them again and eat!