Most scales have flat trays whereas some have cradle - like or bed - like trays. (welcomeparenthood.com)
This is the sort of app that replaces the way in which you interact with your apps up front of your phone - instead of just flat trays of apps, you'll have something completely different. (slashgear.com)
Ensuring that the molds lay flush with the surface of the stone, they locked the type into place and laid the stone slab on a large flat tray. (discovermagazine.com)