Those are really great suggestions. The laundry bag idea makes sense, but I think I prefer my art canvas bag idea more, if only because it looks better.

However, that tray-on-top idea is way better than my art canvas bag idea!

I am hoping for more suggestions to roll in today; otherwise, I'll be on the hunt for a tray soon. If you can think of any specific type of trays - or tray-like items - that would fit the size of the marble slab, please do share.

Taking your idea a bit further, I'm thinking maybe a tray that I can turn upside down would be best so I can provide the marble slab with full coverage. And that way, the tray won't be directly touching the marble slab so it won't scratch the slab if I move the tray and the items on the tray. Thank you very much!

Update 1: If I can find something like this marble-looking tray or this clear tray that can fit the slab, I'd turn it upside down and it'd be perfect.

Update 2: I need to think of a search term other than "tray" because serving trays are usually that large.