I participated in ArtLuzhayka competition. The task was to create places for outdoor rest made of provided materials: desks, boards and other wood stuff.
My proposal presented round grounds of different diameter made of wood boards by splicing.
These ground have three sixes: 1500 мм, 2000 мм и 2700 мм in diameter.
Then there are special dividers made of the same board grids that you can combine in different ways to get different scenario of usage. They create walls and benches.