Choose from single-point or stereo sound and between one and four speakers, or slot four together in a doughnut shape for 360-degree broadcasting.

The house forms a square doughnut shape due to a central exterior atrium.

Each of the 3 holes have one post each to create the hole for the doughnut shape.

To make pompoms, cut two doughnut shapes in card.

A doughnut shaped main charge surrounds a central booster charge.