A square slab 0.028 m thick with a chamfered lower-right corner so its orientation is never ambiguous. Six raised contact pads form a grid on the face, a lit strip runs along the lower edge and another across the back above a stiffening rib, and a hexagonal glyph is set into the upper right. Bounding size 0.22 by 0.22 by 0.04 m; metres, +Y up, +Z forward. Origin: free, at the centre of the chip, on the spin axis, because a collectible like this is hung in mid-air at whatever hover height the level needs and a base origin would put it on the floor. The geometry surrounds the origin, reaching 0.110 m below it and 0.110 m above it. Clips: bob (2.2 s), spin (1.8 s). Rigid node animation only: named nodes with translation, rotation and scale clips, no skinned rig and no skeleton. No collision volumes and no navigation data. Opaque materials throughout; the pack uses no alpha blending and no transmission.