Get a folding table that you can use for cookouts too. An 8x2 wooden folding banquet table with steel legs would do the trick.
These folding type tables can be found at times on Craigs list or companies dumping them ... used office supply stores too. or just the legs .. or find cheap adj height table and tear it down to build your own.
Wife bought a short 4 footer, but 30 inches for $5, daughter then wanted a 6 footer. I should of picked up an extra just for the legs.
I like the miter saw table idea, for greater stability just hang some weight near legs bottom. Did this for a cheap router table I had that was top heavy. The Miter tables go on sale regularly and may have a handle with which to carry and/or wheels on one side.
I should consider my miter table, buy a set of extra mounting brackets so I can swap out my saw for a ski tune top .. ??