Precious metals in the form of coins make great gifts for kids but then I have sized up my nephews and nieces to choose who among them will keep these as an investment. It comes with a carefully worded note wishing for their success in life and may it serve as their lucky charm to more 'golden' opportunities.
In other words, the ones who I know will treasure them, I give them a graded gold buffalo when they graduate college. Up to this day, they always mention it to me when they write, maybe fishing for more? lol I bought these gold coins when they were selling for less than $1K each and Microsoft live offered 30% off on ebay for clicking the banner. This was sometime in 2008, IIRC. Husband and I made 2 ebay accounts each to maximize the deal since the cap discount/rebate per account was $2.5K. We rolled that $10K to more graded gold coins. We have sold a lot to businessmen in HK looking for NGC graded coins.