Sporty Spice Mel C, Britain's Got Talent winner George Sampson and former Home And Away actress Isla Fisher are among the stars who came up with new designs for Igglepiggle from In The Night Garden.
Each design will be framed and auctioned on the eBay website from today, with all proceeds going to BBC Children In Need.
Igglepiggle regularly appears on children's TV, and is also a best-selling toy.
Last year's BBC Children In Need Appeal raised a £37 million to help thousands of disadvantaged children and young people across the UK living with a disability or in situations of neglect, abuse or deprivation.