Get your passenger to empty their pockets...
Are you still on Konis? Has the ride got progressively more crashy? It could be a damper on its way out or any number of suspention items. Or it could be nothing.
Can you reproduce the noise while stationary? If so get someone to look it over while it's clicking rattling and see if there is anything obvious. The suspention is simple enough and woun't just fall apart as long as all the major bolts are in.
If you haven't noticed a change in the car other than the noise I wouldn't be overly concerned. The car is so direct anything major highlights itself very quickly.
Things to check:
All the bolts and nuts are fitted and tight (Wishbones, dampers, anti roll bar, wheelnuts)
Jack up the passenger side and try to twist the wheel up/down and left/right to check for ball joint wear and steering rack wear there should be no movement.
put a lever (I use the jack handle) under the wheel and lever the wheel up against the suspension there should be no clonks or play.
Pull the wheel in and out to check the wheel bearing, again there should be almost zero movement.
Check the tyres for rocks/nails etc.
See if you find anything
