I've always loved contemporary artist/taxidermist Polly Morgan's sculptures. Some feature birds with a delicate balloon suspended in a glass dome. These domes are an iconic way of drawing attention to precious objects, and the fragility of the whole ensemble creates a museum-like artefact to behold.
Alan Wisniewski has got it perfectly right with his Suspend Clock for Umbra's premium U+ Studio Collection. The walnut clock face cleverly floats in mid air, it's contour perfectly matching the dome around it. Like Polly's balloons, the effect is fragile and mesmerising. Time captured and suspended.