Let's Get Inventin' – Series 7, Episode 1

G New Season: Joshua Devane from Taihape was sick of hand feeding the cows on his Dads farm, so he invented a V8 powered 'Hay Bale Launcher'.

G Cameron was inspired by his hamster to create a human sized version of his pet's Zorb. He has come up with his own version of a Hamster ball called the 'Power Ball'.

G Young Inventor Aidan loves to pull things apart but hates picking up his mess in the yard so he invented the Man Mans Mower, the 'Swiss Army Knife' of garden power tools.

G Cassie Clark was inspired by her friend in a wheelchair, who faces a daily mountain of stairs to climb. So has come up with a stair-climbing solution that even kids can afford.

G We all love a good water bomb fight, but fumbling filling and tying is tiresome! Samuel from Christchurch has invented a filling, tying, water-bomb launching machine.

G Scott Faville was inspired when he noticed a road crew of three men and a massive truck were needed to place out road cones one by one, so he took matters into his own hands with the "Coneordinator".

G Alessandra Wilton has an idea to make her pets earn their keep by tapping their almost endless animal energy. But will she be able to train 20 rats to power her to school?

G The 'Papernator is a delivery robot that automatically rolls and fires newspapers by remote control turning the task into a fun Wii video game.

G Clinton hits to road with the new Lets Get Inventin Free App for iPad. He tests it out for the first time with an entire class of kids who create a wild collection of alternative energy inventions.

G Series Finale: Our young inventors have one more chance to prove to the judges that their invention is worthy of the $10,000 AJ Park Patent Prize Package.