'fraid I can't offer much, as I'm not much for creativity.
I, too, struggled with this a bit when setting up my 135 FOWLR Trigger tank.
It was suggested to me that there are fake plastic corals available, but I think those would look really dumb and would probably get algae on them, so I opted not to go with them.
In the end, I just pretty much aquascaped with LR as I would for a reef tank. Just no corals or anything.
If there is anything at all helpful I could offer it would be to go with the nicest LR, with interesting shapes and such, that you can find, IMHO.
On the one hand it may seem like a waste of LR and should be used for a reef tank, but on the other hand one needs all the help they can get when aquascaping a FOWLR and cool LR enhances that, IMHO.
For pictures, I have a thread on my 135 FOWLR in this forum.
Would love to see pics of yours when you get it running.
HTH, good luck, and cheers
