Why’s it good? Laziness + robotics = good. Laziness + sunny days + robotics = Valhalla. This solar-powered electric mower-bot will scythe up to 2,300m2 of grass. Avoiding pets, ponds and furniture, it cuts so finely you won’t even have to collect up the trimmings. The battery lasts 40 minutes before docking for a juice-up, but with the sun shining it keeps going 50% longer.

Gimme: £2,000;  husqvarna.com