I really like this class arrangement! It is also the most space efficient one. When we first introduced notebook classes it seemed to be the easiest solution to simply keep the layout and adjust the power supply to the existing situation.
Zen doodles: here's an idea, prime large canvas squares and "doodle" these designs, then join them together in a large square or rectangle and seal to make a unique floor covering. Or prime and paint directly on a concrete floor.