Thinking more about the table. I am liking the idea of a removable lid. The lid will have the glass, the baking soda, the bottom, and the trim around the edges. Underneath the lid, will be the ZXY and the electronics will be bolted to the “front” side. I can mount a button on the side, or a really big button on the side :).
My toddler will probably be able to make a mess, but I doubt he could lift the lid off.
The hard part is the corners want to mount to the bottom of the lid. So I’ll either have to reprint those with modifications to mount from the bottom, or I also ordered a 1" cylinder magnet, so I could probably get away with 1/2" on the top, braced at the sides, with the larger magnet to close the gap.
At the moment, I have 1/8" hardboard as the bottom of the bin surface. I sanded it a bit to smooth the rough side.