this is easy:
1. wartskin frogfish (PAIR)
2. pistol shrimp + shrimp goby pair (2-3 PAIRS as long as everything is the same species)
3. Ciliata Mantis Shrimp or Zebra mantis shrimp (basically any mantisthat is small like smaller then the big bois like the peacock) (ONE)
4. leaf scorpionfish (u could do 2-3 of em and thats it although that might be too much and MIGHT outgrow but they should be fine)
5. canthigaster valentini pufferfish (PAIR) (MIGHT OUTGROW)
6. randall's frogfish or dwarf frogfish (PAIR OR MULTIPLE)
7. multiple seahorses in a gorgonian tank or a macroalgae tank (ALOT)
8. multiple pipefish in a gorgonian tank or a macroalgae tank or a LPS tank (ALOT)
9. seahorse+pipefish mix (ALOT)
@ileas12:
10. basslets
11. royal gramma
12, mandarinfish or rockskippers or other dragonets