What Are Some Secret Rooms On Meez?

Sketchy- Zoes Zin Retreat (Chillville) [plant across the room]
Electric Jello- Paragon (Posh Heights) [plant across the room]
Afterlife-Sunken Couch Cafe (Arcadia) [plant across the room]
Boiler Room- Cafeteria (Meez Hills/Meez Academy) [grey hanging banner with crest when you walk in]
Thats all I have so far.
Add meeh! ^-^ Rii-uhh-lee