Device comprising decorative objects having restrained freedom to move and suspended in fluid

A wearable animation capsule completely filled with a transparent liquid defining a system comprising at least one decorative element mechanically and moveably suspended in the liquid and held by at least one mechanical fixation element, the liquid sharing a refraction index which is substantially the same as the at least one of mechanical fixation element so that the at least one mechanical fixation element is substantially invisible in the liquid, and wherein the system is configured so that a change of orientation of the system relative to an acceleration or deceleration force provokes a movement of the at least one decorative element, the wearable animation capsule comprising a mechanism accommodating thermal expansion and/or contraction of the liquid, avoiding the generation of unacceptably high pressure.