Scrub the sink to prepare it for painting.
Spray the sink with a coat of primer.
Mark the cut lines on the table to fit the sink. You may find it easier to lay the sink upside down on the table and trace around the edges. Just remember, you'll have to cut inside the lines.
Start cutting the table by drilling a hole just inside the marked lines.
Insert the saw blade into the hole you just drilled, and then cut around the inside of the marked lines.
Use sandpaper to smooth cut edges.
If you wish, cover the table with a fresh coat of paint.
Paint the top of the sink to match the table. Allow the sink and table to dry.
Mount sink drain holes with plugs.
Pour sand into the sink and get a bucket and shovel for the kids.