I am told (though never done this) that you can put regular houseplants in a mudskipper tank. What you need to do is isolate their pots from the brackish water, which shouldn't be too difficult with a bit of clever DIY. Those air plants would also work nicely because they could be glued (with silicone) to whatever you wanted, and positioned well above the water line.
If you were really smart you might pick out plants like Cyperus spp. ("aquatic palm" in the trade) that naturally on the edges of brackish marshes so you'd get the right look.
Cheers, Neale
Thanks for that Neale, I've also been looking for some non-aquatic plants suitable for my Mudskipper tank, other than Mangroves.
Nice tank mark7616, looks great.
Mike