Brackish tank: A ton of fake plants. Hard to do brackish plants and haven't had the time to start looking into it. Also have some Greek columns and clay pots.
No need to look into brackish-tolerant plants, bazil. There's a lot of great choices so it's easy to pick something nice. Here's a list: Anacharis, Anubias, Bacopa, Cabomba, Hornwort, Water Sprite, Cryptocorynes, Echinodorus, Pygmy Chain Sword, Hygros, Java Fern, Myriophyllum, Temple Plant, Ceratopteris, Banana Plant, Sagittaria, Vallisneria, and Java Moss.
Back to the topic...
I have tons of fake ornaments and fake plants. Most of that isn't in use now that I'm so into plants (except the gargoyles.. lol). A lot of it is even rather old now, but even more sentimental. I got rid of the enormous fake castle (ty Craigslist person).. but I still see ways to reuse a lot, especially the caves, bridges, arches. The little signpost that says "no fishing" looks cute sitting on a bookshelf.
I have a big fake ornament tree stump I think would look great covered in real moss.. same thing for an archway. (Not to mention Yuriy's bright neon cave that was painted black.) So I don't want to get rid of any of it.. just in case.