The lesson
Film the product from above on a blank background with only hands in view, and let the product be the subject.
A top-down view shows the OP-1 field on a pale grey surface. Hands rest at both edges of the device, later press the keys from below, and one later view shows a single hand at the bottom corner. Black keys, the display and four knobs in navy, tan, grey and red carry the contrast.
This only works for a product that is visibly worth looking at. Keep the fixed overhead angle and the hands-only rule, and drop it for software with nothing physical to film.