I have a 4 and 6 year old and they do grow through that stage quickly. We used pool noodles and cut off pieces as needed. Then split them up one side to slip onto sharp corners and to keep doors open. Very cheap and customisable.

Gorgeous marble. Love it. I wouldn't do subway tiles, too busy and too much grout. I did large gloss white tiles with white grout and it's not hard to clean if you keep it clean as you go along. Which you will do because it's white and shiny and new! I love mine as it doesn't detract at all from my bench top. The marble could be amazeballs but I'd have the same concerns re too much pattern...Good luck and post a pic when you're done!

Different strokes for different folks, as they say. We have a butlers pantry, smallish, with a sink in it. The pantry has become effectively a walk-in pantry, with storage, a wine fridge and the toaster and microwave. It's very useful, but we almost never use the sink because there isn't enough practical counterspace and because, well, who wants to do dishes in a closet? We also have an island, with a single basin sink in it, and of course the dishwasher. That's where we do prep, and it works just fine for us. We can watch TV while pealing spuds or washing those dishes that don't go into the dishwasher. Even with the sink, there's still plenty of prep space, and we have a good work triangle between sink, oven on the wall directly behind it, and fridge, oven and pantry on the end wall. In practical terms, the arrangement works for us. When we entertain, we clean up and load the dishwasher as we go, dump the pots and pans in the butler's pantry, wipe off the bench, and we're good to go. And since it's only a single basin undermount sink, the look is clean enough for us.

Thanks to everyone who has helped me with their comments. I’m attaching some more photos in the hope that one of you who can use creative technology will be able to help me visualise where I’m headed. I have taken on board the comments about not creating a hazard but would still like to see what this would look like: A narrow gap between the pantry wall and the end of the bench (about 400 - 500mm) big enough to create the island look but not big enough to tempt walking through. The ‘step’ built up to cover the plumbing and then covered with dark concrete tile. Then this tile to come out through the living area incorporating the support post up to the sliding doors as a feature contrast to the timber. Can anyone create that image? I haven’t bought my tiles yet, or I would just lay them down and look at it. But I have a picture of them that I could upload. Also, as you can see, I pulled out an old fashioned room divider so I’m fairly sure I have the depth to lay the tile so that it will be flush with the existing flooring. Thanks in anticipation. Jane