Only thing I can think of is laying a towel down, placing a board on top of it and placing another towel on top of the board
I use an old portable dishwasher that sits in the middle of my kitchen(poor woman's kitchen island-haha!) I use it for storage, rolling pastry and general food prep and when I want to iron I fold a towel in half and lay it on top of the dishwasher. The loops in the towel fabric kind of keeps things from shifting. Works for me.