I have a Bitcoin investment that’s in cold storage on a hardware wallet, but I don’t really know anything about exchanges. A friend asked me for assistance, she wants to buy a small amount, to hold long-term for her kids’ futures ($100 each, for two kids) just on the hope that it may appreciate into a nice nest-egg after a couple decades.

It’s such a small amount that it’s not worth purchasing a hardware wallet, so where does she hold it? Is there a trustworthy exchange to use?

Also, the kids are minors, so is it possible to make each of them accounts, or should it be in her name until such time that she decides to transfer it to them one day?