I built the Dream Smart Garden

Directional and 360-degree garden speakers with buried subwoofers keep sound close to listeners without annoying neighbours.

High-maintenance and awkward to install, but the rolling back massage is superb and earns 9.5 out of 10.

Sets the mood and needs no setup, but bioethanol is not hot or bright enough outdoors, so he would pick gas next time.

Very clever, well-designed barbecue with electric lighting and temperature control that he rates 8.5 out of 10, though it costs much more than a normal barbecue.

Stunning, transparent bubble water feature that looks magical at night, rated 9 out of 10 though very heavy.

Brilliant outdoor TV with great brightness, contrast and low input lag, held back only by costing about three times an indoor equivalent.

Functional and clever outdoor games table, but weatherproofing compromises make the surface cold, clangy and not ideal.

The highlight of the garden, giving full control over scenes, fire effects and schedules.