A vault for the future

Here's a good one, dude

A friend of mine had a baby recently, and in order to secure his financial freedom when the baby is 18 years old, he is preparing a vault that contains several assets that will - most likely - skyrocket in value in two decades.

So far, he's got in the vault:

• 100g of 999 gold
• 10oz of 999 silver
• A USB with 0.2 BTC & 1 ETH
• 5 Splinterlands Alpha packs on a Hive address
• 1 MTG birds of paradise beta edition
• Game boy advance with pkmn red and yellow
• Some freshly printed cash just for fun, because it will obviously be gone by then and who knows, perhaps it is worth something, if not, well it's just fun to have.

And of course, a handwritten note with personal stuff.

Last but not least, and this is a given, he will teach the son/daughter how to be financially responsible and make sound decisions.

What would you add to this list? What would you take out?