Java fern, java moss, and anubias growing on branches/stumps in the upper parts of the tank would likely be ok. I have some "potted" plants, and so far they seem safe from getting eaten or destroyed by my L7, L204 and L91. I used to have an L264 in that tank, which sadly did not survive the move, and it would eat the base of amazon sword plants. Crypts don't seem to be too tasty.