This particular model shows office spaces along with the reflected ceiling plan inserted toward the back of the model. The round skout  lightst were actual white plastic washers that saved allot of time if I had to make them another way. When making models look around your surroundings or go to a store like Joann’s and look at all the sewing accessories and buttons. With a little creativity you’ll be able to find misc. objects for your models. Re-paint them and make them fit into your scale.  For example, small buttons can be made into flower pots.