I wrote about this little workbench before at http://eriktheready.com/refurbish-workmate-copy/.
However, I needed a flat work surface to do small work on because my big workbench is so crowded with all manner of stuff.
I scrounged a piece of board and cut it to a reasonable size – in this case just under 600 x 800mm.
I attached two pieces of wood with screws to form a lip front and back of the board.
The back of these LIPS is just under 350mm apart.
By using the cranks on the bench I close the sides of the bench, place the board with the lips down then crank the bench open again so that the edges of the surfaces latch into the lips.
This now gives me a surface I can work on without worrying about it tipping if I put something near the edges.
When the top is on and the bench is being used as a table I needed to keep the dogs and pegs that I made before, somewhere they will not be misplaced when I DO want to use them.
I then drilled holes in the pegs and threaded a cord through them and did the same with the dogs that fit over them – threaded a piece of string through them.
I screwed cup hooks in under the bench and the dogs and pegs can hang there out of the way and where they will not be separated from the bench itself.
This turned out rather well – very satisfying and a great boon when I first used it.