I was going to get the tray printed (next door is a avid 3D printer dude) but I have found that I really like really cold 16oz drinks!I didn't look super hard, but I couldn't find any trays for a cool box. So, I downloaded the 3D model from 2024 Toyota Land Cruiser Cool Box Tray, uploaded it to Treatstock, and ordered one. It (ABS/Black) shipped for $17.13, which doesn't seem that bad.
I'll post some pics when I get it.