Here are two ideas of how to handle this situation:
- The purchaser could create an account, add the recipient child as a member to their account, and then enroll them. The purchaser would get a receipt they could then give to the child at Christmas or make something else.
- As an admin, you could create an item in your store titled “Registration”, the purchaser would create an account, make the purchase, and then you could followup with some kind of certificate and a corresponding coupon code that the purchaser could present to the child at Christmas so the child's parent could sign them up.