Teams build gizmos enabling Richard to straighten his duvet without leaving the bath.
Three stars of TikTok battle engineering students to build the best kettle boiler going.
Amateur pilots and a trio of stunt fans compete to build an automatic dog-feeder
Can a machine water the plants without Richard getting up from watching the TV?
In the first semi-final, two teams of brothers build jaw-dropping chain reaction machines to enable Richard to dust his ornaments without getting out of bed.
Second Semi Final: Can the teams make a machine to cook sausages without Richard leaving his study?
It's the grand finale as two teams battle to build the best party machine for Richard's house and garden - all made out of everyday objects.