Kids can try their hand at Egyptian-style construction by turning a pile of sugar cubes into a model pyramid.
Mix up a batch of "mortar." Just beat together one egg white and a pinch of cream of tartar until soft peaks form. Add 1 1/2 cups of confectioners' sugar, 1/4 cup at a time, beating until well combined. (Since the egg in the sweet mortar is raw, be sure your kids don't eat it.)
Assemble the base of the pyramid. Using the mortar and a pastry brush, glue together ten rows of ten sugar cubes each.
Glue together the rows to form a square.
For the second layer, glue together nine rows of nine cubes each and then center and glue the layer on top of the base square.
Use this method to add seven more layers, each time decreasing the length of the rows by one cube.
Top the pyramid with a single cube.