If you're looking for manga similar to Kizudarake no Ringo, you might like these titles.
Meet PET! PET (which stands for polyethylene terephthalate, a type of plastic) was a simple plastic bottle until nine-year-old Noboru Yamada recycled him. Now PET's a SUPER ROBOT programmed to protect Noboru at all costs! Whenever Noboru's in trouble, PET transforms, plugs in, and jets to the rescue! Unfortunately, PET's "help" usually does more harm than good, proving time and again that just because you call yourself "super" doesn't mean you have a clue.
Rani cut off her wings to save Pixie Hollow and her fairy friends, but a fairy who can’t fly is unheard of. After a disastrous accident at the Fairy Dance, she runs away to try and find her own place to belong. Maybe the mermaid lagoon could be her new home…
Yuu Shirogane is a hot blooded school boy who competitively plays the Nintendo DS game Pokemon Platinum in order to become the Battle King.
Tinker Bell is the best tinkerer in all of Pixie Hollow. She's even asked to fix Queen Lee's bath tub, the biggest honor for any tinker fairy! But when Tink loses her magical hammer in Peter Pan's secret hideout, she loses her ability to tinker! Will Tink be able to get her hammer and her talent back without being caught by Peter Pan and the Lost Boys?
Petite is the smallest fairy in all of Neverland. She’s even smaller than a bug! Petite’s small size makes her clumsier than all of the other fairies in Pixie Hollow. With the Moon Banquet coming soon, all of the fairies must present their talents to Queen Clarion, but Petite hasn’t found her talent yet! Can Petite find her talent before the Moon Banquet in just a few days?