This is a presentation box covered with green felt. A bit too bright for real life, but suitable enough for pulp or sci fi.
Here's the board, with three aquarium scenery bits and three 3D printed rocks - and a couple of models posing:
Ground level view featuring 'the atomic chicken':
Nothing elaborate, but quick and easy to set up and could be fun.
I might include it as a noble's secluded garden in a hive on Necromunda...