Suggestion needed for reef safe inverts

[The BioAstronaut]

Any suggestions on unique uncommon invertebrates that can be added to a 20 gallon Reef?

 

[Big G]

Welcome to R2R! The folks at KP Aquatics have lots of choices. Great quality, service and fast shipping: https://www.kpaquatics.com/product-category/marine-inverts/

 

[GoldeneyeRet]

Squat lobster. I have two in my 120, I love them

 

[Diesel]

Keep it simple, Harlequin Shrimp but you need to feed it starfish as in Asterina's or get a sand shifter and cut every week a piece of a leg off.
Don't worry it will grow back.