"Under the center console cover." Are you talking *inside* the center console? I don't believe I've heard of anyone talking about adding a tray inside there. However, if you remember the manufacturer of the tray in your T&C, you can try their website to see if they have an Odyssey version. Or, try googling it.
Another option:
One thing worth doing, since it's so cheap, is to use various sized zippy bags. Ziplock, Gladlock, etc. Keeps like things together and is easy to rummage around to find what you're looking for.