(1) School band director In the US, public school band directors are generally either music education majors or education majors with a minor in music.Thus they fulfill the university's general requirements in math, English, social sciences and sciences (biology, chemistry, etc.) and they have taken music education and general education course that allows them to graduate.
The clear plastic tri-folds do not seem to cushion the eggs as well nor insulate as much as the foam. Pulp cartons are possibly more environmentally friendly being made of paper and all, but they cannot be cleaned. Once they get dirty there is nothing to be done but toss them.
Pickled eggs are preserved in an acidic solution, making the container that they are pickled in important to prevent corrosion and off-flavors. The most common recommendation for a pickling container for eggs is a glass jar. When using a quart jar, one dozen large chicken eggs fit perfectly, making storage simple. However, it is possible to use a rigid food-grade plastic container for making pickled products. Polycarbonate, HDPE and PP plastic containers are all appropriate for brining eggs; these are commonly sold as food-service containers, food-safe plastic buckets and coolers.