Originally Posted by
wphamilton
FWIW I have heard that on my wheels and the clicking was where spokes crossed......
+1
How slow is the OP riding?
At any normal riding speed, whatever is loose inside the rim will be pressed and held fast against the outer wall and silent. So look for some other cause of whatever noise is bothering you.
You can diagnose clicking at the crosses by cutting a piece of paper into a bunch of small pieces, and trapping one between each of the crosses. If this cures it, remove one or two at a time to reveal which crossed pair(s) is the problem.