Norminn told us...

How about landscape cloth with large pavers and river rock on top.

How about large pavers on 8"x8"x16" hollow block piers with vertical holes?

Make your own 4'x4' 100 lb glass-fiber concrete pavers averaging 1/2" thick
with welded wire fence reinforcement and bumps below the corners that rest
in pier holes on 4' centers?

Nick