Not exactly a new idea...but I needed a gift for a friend's wedding. I cut these trays from some chunks of Mulberry that I salvaged off a neighbor's tree many years ago. This wood is just awesome, especially when quarter sawn. It ended up a bit more work than expected. Just re-sawing the tough wood took quite a while with my little 14" bandsaw and then drum sanding to thickness. I finished the blanks with 3 layers of CA glue and 400 grit ROS before cutting to shape and achieved a (hopefully) durable satin finish. Not dishwater-proof I guess. Only CNC work was the cutout tool path with 1/8" endmill, two shallow fixture pocket tool paths to vacuum hold the trays for chamfering and two 45 deg V-bit chamfering tool paths (top/bottom).
Set of 8 trays:
Quarter sawn Mulberry grain close-up:
In operation...(just a test of the concept)