Below are just a few of those products:
And one of her fabulous projects; Doors of Secrets:
I wanted to create an everyday product, like a door, that would appeal to people's imagination. The Door of Secrets contains hidden storage compartments, raising people's interest and curiosity. It makes you wonder what is hidden inside and invites exploration. You can shuffle the elements about, so there is interaction between the actual door and user. - Marjel Wessels Boer
Click on the above images to enlarge. Above: Dutch designer Marjet Wessels BoerVisit her site here.