This version 2 batcave / batarmory diorama is made from versa board and acrylic plastics. Cut and glued together . Painted with flat black acrylic paint, weathered by lacquer and enamel paint and then top coated with gloss polyurethane paint to make a wet effect. Figure is from sdcc tdkr batman .
PERFECT
Your skill is amazing!
For the keyboards, if you're looking to avoid scratchbuilding them - look up online computer monitors & keyboards made by Playmobil. They're ideal (along with a lot of other real-world accessories) for doing custom dios for 5"-6" figures.