The see through Bee display does not get any easier than this.
To make one of these take a standard Nuc box make up a top frame that will accept a brood frame. The sides are made from Acrylic. I suggest a minimum of 3mm thickness to give some rigid support to the top box.
I have 2 sets of canter levered hinges to allow easy access to the top box and also the bottom.
I can make these up on request if required at my factory.