I love my extension table! Not only because it makes any sewing so much easier....but because it cost less than $5.00!
I made it from a 30" X 30" of 3/8 plywood. Measured and cut the hole for the machine, sanded and put on MANY coats of polyurathane. When all was very dry I cut an old closet pole into "feet" and glued them to the bottom of the "table" and WALLA a large extension table.
Besides all that, my machine was too high to comfortably sew, so I found a computer table (wood) on Craigslist and cut the legs to the right height (had to take out the keyboard slider so MY legs would fit!). Just like uptown!!!
I love it!!!!