Greetings - 
I finished the final version. Changed the sand to a more pleasant color, and went with a color matched sand tray, added the cone incense, and another fake cactus.
Also tried a color changing tea light.
Oh, and made a Halloween version as well, my kid will dig it. I’ll put some candy corn or mini m&m’s in the front tray for their version. And have to find a suitably scary fake plant for the pot.
On the Halloween version, I printed the ‘white’ through the black of the cube, so the tea light color glows through the symbols. Was tricky and had one candle print lose the plot half way through.
Oh well, still learning, but having fun, which is the whole point.
And now, I have some ‘Dalmatian Poop’ to melt. 
HL