Any suggestions are welcome

Thanks

Edit: plan is to tell them not to open it before 2032, thats why i wrote longterm wallet.

I believe Mitchell have what you need.

Mitchell's BtTalk profile : https://bitcointalk.org/index.php?action=profile;u=113670

Mitchell's website :

https://www.coinsofnakamoto.com/

Good luck.

Those paper wallets look fancy but as always there is no garantee that the private keys were saved by the manufacturer or extracted in other ways.