沐
=
木
+
氵
:
Malte Monkey (mu) is bathing (沐) a Christmas tree (木) in the space station's bathroom (Ø4) by pouring water from a water bottle (氵) over it again and again.
浴
=
氵
+
谷
:
Yu the Great (yu) is taking a bath (浴) in the space station's bathroom (Ø4). She just uses bottled spring water (氵), and for special effects she adds a few bags of popcorn (谷) too.