Post Box

Information
AKA Mailbox.

"Post box" name is referenced in Toca Boca Instagram post https://www.instagram.com/p/BIYfjBggyyP/

Recipe
(Mega Bouncy + Brick + Transparent Magic) + (Conveyor SE + Transparent Magic + Black Warp) = Post Box

See video https://youtu.be/2dIcklGHnB8 for the recipe in action.