A little girl is riding a small bicycle, likely a tricycle, while being pushed by her mother.  
A toddler is riding a miniature ATV, likely a toy jeep, while being guided by his father.  
A child is riding a tiny scooter, likely a beginner's model, while being supported by a grandparent.  
A baby is riding a plastic carriage, likely a toy wagon, while being pushed by an aunt.  
A kid is riding a small electric skateboard, likely a toy version, while being assisted by a sibling.