Have you thought of using a wooden tv tray? Just cover it with insulbright and batting and staple all layers to back.

I bought a June Tailor pressing board 8 to 10 years ago from Joann's with a coupon and really like it. I'm not sure they carry them anymore, but here is one on amazon http://www.amazon.com/June-Tailor-Cu...pressing+board

It is still in great shape. It is only for pressing and there is no cutting board attached to the back side. The back is covered with a fabric that will not mar your table. I keep it on a t.v. type table in my sewing room for pressing while I am seated at my sewing machine.

I found a small table top ironing board@ walmart's(looks like a mini ironing board) when the college furniture section became popular. It has pop up legs that raises it about 3" off the table. the legs fold flat for storage.It may be in the regular laundry supply section now,with the other ironing boards.

I too have a mini ironing board and it has little rubber thingos so it doesn't scratch the table. I use this when piecing, but any major jobs get done on the normal ironing board (I just move it around the place to suit my needs). It lives in a cupboard at the end of every day as I try and keep the house relatively tidy.

Many of my friends have a tv tray table that they covered with batting and fabric that they place beside them and iron on while quilting.

Another chime in for the wooden tv tray. Walmart has nice ones. :)

Depends on the size of the piece you want to iron. My DH has made a lot of these for quilting friends of mine.

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On mine I use a Conair miniature steam iron. The board measures about 15" long and is free standing with a handle.
I take mine to the quilt guild during classes as there are only 2 ironing boards and with many members they are very busy. At home, mine sits beside my sewing machine.

I made a pressing board, easy peasy found a video on line that I'll find again and share. 1/2" or 3/4" plywood or particle board. Basting spray cotton batting that is cut 3" bigger than the board. Heavy canvas, you can get fancy and get the kind with a 1" grid, again 3" bigger then board, turn it over staple gun nice and tight. Then finish the back with a good fusible interfacing to keep the staples from scratching the surface. Ahhh here is is Sharon Schambers video https://www.youtube.com/watch?v=4LGbXou_u4c

can you move your ironing board next to your work table for the sewing time?

I have a very expensive solid oak dining table, so when I have to use it to iron, I put a sheet of foil on it, lay two layers of thick toweling over that and iron. I would never use it for large ironing though., I do not want to risk my table.