玩意儿 (wán yìr): erhua variant of 玩意[wan2 yi4]

He has been interested in all kinds of electronic gadgets since childhood; by age ten, he could assemble a radio by himself.

Don't pile up all that useless junk in the living room; hurry up and clean it up.

This newly bought gadget looks fun, but in reality it's not convenient at all to use.

Grandpa always says young people today can't let go of those little gadgets, even staring at them while eating.