Two slices of bread and assorted sandwich ingredients. Just get the kids to cut out the pieces and stack 'em up in their sandwich. Later they can present their sandwich to the class and talk about what they put in their sandwich and why!
For a variation - Take one student and ask them to dictate to the class their dream sandwich and the other students must make it accurately.
For a variation - Take one student and ask them to dictate to the class their dream sandwich and the other students must make it accurately.