Another tray becomes a replacement for the plywood on the Step2 rolling seat in the Vassar Farms plot:

I reused the old hinges, as this tray seems to be slightly thicker than the one on the home garden seat. The straight edges show it’s also somewhat smaller, but it’ll work just fine.
The bottom of the tray with its Silite logo now faces upward, because the top surface has eroded to a matte finish while supporting a bunch of plants outdoors during several summers:

So you can get two or three years from a painted plywood slab out in a garden, depending on how fussy you are about looks.
After two seasons, the first tray doesn’t look any the worse for wear: Silite trays really will survive the Apocalypse and be ready to serve breakfast the next day.