You can turn it into a new table or make it the size that fits your table.
Hardware you will need:
-Small hammer (1-0.5 pound)
-2 Tubes of white silicone sealant (That's what I've used - you can use the clear type)
-Black spray paint
-20 Small wood nails (1" lenght)
-37" * 37" Plywood (0.5" thick)
-4 x 37" * 1" Plywood for frame (0.5" thick)
-0.8" Glass mosaic stones - ~1498 Black ~153 White ~310 Blue ~340 Red ~8 Yellow - Total of 2209 stones.
** I don't know the prices for these materials in the US but I paid about 70$ for the mosaic stones, 20$ for the plywood and already had the sealant, nails and spray.
** You can use different kinds of materials to glue the stones - plastic glue, mosaic adhesive or other types of glues.
** Yellow and red stones are more expensive than other colors.
** It is not recomended to use MDF instead of plywood because of its weight and poor water resistance.
Step 1: Choosing an image
I suggest you google images and look for the words "pixel art" combined with a name of a character or an object you would like.
You can also use photoshop to modify an image- I will show you how. It is important not to choose an image with too many of details.
Consider the number of stones that you will need according to the size of the stones and the size of the surface.
For example - to cover a 40" * 60" surface with 0.5" stones you will need 40/0.5 * 60/0.5 = 9600 stones.
REMEMBER - 1 PIXEL = 1 MOSAIC STONE (You can use smaller stones or more pixels but I find 2209 stones is close to my limit of patience)
You don't have to use photoshop, you can draw your own pixel art or look for pixel art tutorials.