Echo Lacquer is a gadget of Doraemon. Function Just spray the gadget on and it will produce an echo; making it seem like someone's responding even if there is no one there. This gadget can be removed using its remover. Appears in Go Home, You Unwanted Guest! Usages Nobita's bathroom door. Retrieved from "https://doraemon.fandom.com/wiki/Echo_Lacquer?oldid=75580" Categories: Gadgets Gadgets originated from original manga Community content is available under CC-BY-SA unless otherwise noted.