Glad you found some! Next time you might want to buy some first to keep on hand then make the food a size that will fit the stands you have.
I'm going to make the flat silver plate out of a button or something I find. Maybe clay covered in silver paint.
It's pretty easy to make miniature plates (and platters, etc) from polymer clay and would probably work better than a button.
The methods for making mini plates with polymer clay are roughly the same but there are differences in how neatly clayers cut the disks (if they cut), the sizes of the "pressers" they use to create a depression in the plates, whether the plates have flat or fluted edges, whether any color or pattern is built in or painted on, etc.
I've found a few examples online, but most are the not-too-neat type (and most don't use paper under the clay
on the work surface when rolling or pressing, so pulling the clay up creates distortion).
There used to be some good tutorials for excellent mini plates online but the ones I was looking for are gone. Here are a bunch more for different types though:https://www.google.com/search?q=polymer+clay+miniature+platehttps://www.google.com/images?q=polymer+clay+miniature+plate
The easiest way to make a simple miniature plate is just to press directly down on a ball of clay using something flat to create a disk with rounded edges (remember to do that on paper); press until you have the diameter and thickness you want.
(Some people use a round cutter instead to create the disk but the plate will then have straight edges that probably will need to be rounded/softened, and often the cutters used aren't thin metal so the cut doesn't look neat).
Then press in the center of the disk you created with something that's narrower in diameter than the plate, and is round and flat (perhaps a new pencil eraser, or a dowel end).
I like to have some kind of depression and rim area on plates, and personally I want only a narrow rim, but anything is okay.
(Instead of making round impression in the plate, you can just kind of press up the edges of the plate from the underside to make a narrow kind of rim.)
A very thin disk could be placed on the bottom side of the plate (after shaping) if you wanted to simulate the "foot rim" of normal plates.
Of course, you can always make a mold from a plate you buy/find/make so that you can more easily make many more.
In this pic, a mold is made from a fancy plate using two-part silicone putty. That mold is intended for casting with resin, but you could also use it as a pushmold for polymer clay (tip: use a ball of clay that contains a tad less than would completely fill the mold so you won't get "edges" spilling over).http://www.etsy.com/listing/84380090/cake-plate-fork-tiny-mini-mold-deco
Tip: using at least a bit of translucent in your white (or any other color) plates/etc will make them more realistic looking...also of course, using a gloss finish if duplicating ceramic glazed plate
You can get all the color on the plate from the clay itself, or paint it after baking (all over, or just a pattern), or even make canes and use the slices to create plates**.
If you want a metallic
-colored plate, while the clay is raw, you could use silver leaf or silver real-metal powder in for the absolute shiniest, or mica powder in silver which will be a little less "hard" shine.
Or after baking, you could rub the plate with silverish metallic wax, or paint it with acrylic
metallic paints or with silver powder mixed into water-based clear finish.
There's summarized info about all those "faux metal" possibilities in my answer to this question at YA which includes several pages at my site with more detail on each, if you're interested:http://answers.yahoo.com/question/index?qid=20120830071523AAv0DMi
** like these fabulous "Delft" plates made by Alan Vernallhttp://www.pcpolyzine.com/0210october/delft04a.jpghttp://www.pcpolyzine.com/0210october/delft0210.html
(would be easiest to create round canes when making plates or bowls rather than square tiles like he used elsewhere...then just use one thick slice to make each plate)