Future savings/investments?

Hello all, I was wondering if you could help. I am from the uk but my child is in Thailand. In the uk there are options where it's possible to open an account or make an investment for a child and they collect it later. For example on their 18th birthday, they will receive an amount (previously deposited plus interest). Usually the account can't be touched before a certain date. Do they have such things in Thailand? I distinctly remember something collapsing in the past once, a similar sort of thing, something to do with long-term investments anyway.

Any advice on how I can create something where I can make a deposit as a gift of some kind which can't be touched for say 5 years or at a certain date would be greatly appreciated.