For wirelessly charging an iPhone, Apple Watch and Airpods, most of the options on the market are some variant of this form factor:
The designers at accessories brand Anker, however, have pushed themselves into thinking outside of the box (paradoxically, by making a box) with their 3-in-1 Cube with MagSafe charger:
While I don't know if I'd qualify it as "compact for travel"—is a cube ever an ideal shape to go into a bag?—it certainly presents a more compact form on the tabletop than the competing designs. And I think that when not in use, the bare cube is easier on the eyes than the clotheshorse-style units.
The device runs $150.
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