Do you have a garden or a plot wahaj?
If a garden, what about a water feature? Make a reservoir, arrange the tiles in decreasing concenteric circles above it, overlapping, until you have a slate cairn with a hole up the middle in which you pop your pump so the water cascades down the sides ::) I made one of these in a previous life house :)
The sound of walking on slate paths remind me of nails on a blackboard, prefer the soft pad pad you get with woodchips ;)