Marcus Collins will perform OutKast hit 'Hey Ya!' on a jumbo jet stage prop, while Little Mix will enter Wembley Arena on Harley-Davidson motorbikes and sing 'You Got The Love'.
The band will perform in front of a giant screen showing animated female soldiers - said to resemble Cheryl Cole - doing mentor Tulisa Contostavlos's famous arm salute.
Meanwhile, Amelia Lily will take on Christina Aguilera's 'Ain't No Other Man' and Mariah Carey's 'All I Want For Christmas Is You', after becoming unhappy with her initial festive song choice of Wizzard's 'I Wish It Could Be Christmas Every Day'.
Lily will sing with just a group of backing dancers, leading to claims that mentor Kelly Rowland, who is reported not to be fussed whether her act wins, has let her down by failing to secure more impressive props.
"Amelia looks at a distinct disadvantage for the final," a source told The Sun. "Marcus and Little Mix have gone all out and raided the production budget for their props.
"Kelly could have secured something extravagant for Amelia but she just wants her to go out there and sing. It's a high-risk strategy as what you're looking for is a memorable performance that will make people pick up the phone."
Speaking of his performance, Collins said: "The plane wasn't my idea but I'm thrilled with it."
Meanwhile, Little Mix star Perrie Edwards said: "We have lots of input in what we do, so we thought this would be a cool idea. Bombing around on the back of the motorbikes we're thinking 'yes, this is a good idea'."
It was previously reported that the X Factor finalists will duet with their mentors at the final.
Lily and Rowland will sing Tina Turner's 'River Deep, Mountain High', while Little Mix and Contostavlos will perform a medley of Alicia Keys' 'If I Ain't Got You' and 'Empire State Of Mind'. Collins and mentor Gary Barlow will sing 'She's Always a Woman' by Billy Joel.