The first thing I do when I get home every evening is to put on my slippers.

slippers 是名词 slipper 的复数形式，slipper 由动词 slip（滑行）加后缀 -er 构成，字面意思是"便于滑行的东西"，指"拖鞋"这种轻便易穿脱的室内鞋。