I've been buying my new nephew a few bars of silver for every occasion (e.g. birthdays, Christmas, Easter). My hope is that by the time he's 18, he'll have a few thousand dollars in silver to cash in. Then he can use it for college, to help buy a car, or make some kind of adulthood investment.
Is there anything unusually bad about this idea?
I would reccomend old silver coins instead. The rare dates are always easy to sell. Old silver dollars are an ounce (avoir dupois) of silver but anything with low mintage (less than 300,000) is probably collectable. Especially in silver dollar sizes. Standing Liberty half dollars are a beautiful coin. As a rule of thumb, all coins from 1920 and 1921 (except Morgan silver dollar) are good investments. Your heart is in the right spot because you are considering the youth's future.
The problem with Silver is it's too bulky if you want to accumulate a significant investment.
Gold, at app 60x the value per ounce, is far more convenient in that respect.
$10,000 of Silver is near 500 Ounces. We're talking closet-size space for not a very large position/investment.
and if one wants to invest mainly to hold a precious metal, not numismatically, gold is also better because Gold goins, such as $20 St Gaudens is not only beautiful, but sells as little as 20% over face amount in the lower but slabbed UNC grades. (MS61/62/63)
Whereas Silver coins, you are going to pay a Large Numismatic/rarity Premium, several Hundred/Thousand percent over face, in investment grades.
This will not rise with Bullion, altho that is not to say that hasn't worked out well over the long term too.
Just that if you want Nice looking Bullion, instead of Numismatica, Gold can do both and takes up much less space.
There are also Exchange traded Funds/ETFs, GLD and SLV, which aren't as good as owning Physical metal but are very handy.
They Erode in value slightly over time because of expenses of the fund and only own a fraction of the amount in them.
There are also ETFs that own dollar-for-dollar physical metal, but they have expenses as well.