Here I would use paving modules made from recycled materials – they could be artificial stone (precast concrete) made using previously used stone chipped into particles or waste stone from other products chipped into particles. Concrete is a reusable and recyclable material so it needn’t go to landfill if and when the site comes to be re-landscaped. It would be advisable to fill the gaps so that there is no risk posed to stiletto-wearers, but the gaps should be filled with a permeable substance to allow the patio itself to remain a permeable hard landscape.
I have simplified my form to that of an octagon, with shares the same angles but is a regular polygon. I have used the angles on a large scale in my design, but I would also like to use octagons themselves to create permeable paving for the hard landscaped surfaces.