Here are two scatter terrain Marshes for your tabletop RPG games. There are 4 versions of each (normal, normal with holes to add grass, printed water, and printed water with holes for grass).
For these marches I used super glue to glue in a couple bristles from an old chip brush (cheap paint brush) into the printed holes. I used clear two-part epoxy resin to create the water pools.
These models print flat and do not require supports or rafts.