I am always pleased when what I think a project will look like actually comes about.
We got the divided trays glued together to make the 2 sides. Then we put molding on the sides to make a 1/4 inch lip. This will hold the lids on the boxes. Quarter inch plywood was cut to make the lids.
I need to line each box with foam and then get some memory foam to attach to the lids. All of that will keep the pastels from moving around too much. I haven’t decided if I will actually hinge these together or just sinch them with twill belts or velcro. Probably one more day to finish and load this puppy up!