Universal Card Tray and Stackable Undertray for Discard

I was remixing Cobaltjeh's Item card holders for the Nemesis Board Game, to use for the games other cards, and I liked the basic design structure.

...but I have a lot of other games, and wanted a more universal card tray. I added deeper notches on the sides, to make cards more accessible.
I was also finding, a lot of the board games, I wanted trays for, had multiple card decks, and with discard trays, could take up quite a bit of table space.
the original design, had the tray, with, and without, a rear, upright discard tray. I liked the idea, but had my own idea, for an under tray, for discards. Printing as a single piece, with supports was awkward, so I went with a simple stacking design, to save on table space.

I sized the file, for common card sizes, for normal card, and small card decks.
double check the size of your cards, and scale as needed.
I didn't scale these for sleeved cards, but scaling them up slightly should be easy.