I finally got round to decorating the messors outworld, not bad for a first attempt.
I made it out of the outworld by making a acrylic tray the same size as the outworld. I filled the tray with grout, topped with a small stone, a twig, a plastic plant and sand. Once set I removed the acrylic sides and the two ikea pencils marking the access holes.
It took a little sanding to give it the snug fit I wanted. But I can now remove and change if I want to.
Messor Barbarus (Redhead)