"These kinds of funds can really compound over time, meaning that if you let it run, the money can build upon itself," Cramer said.
For investors who are more interested in buying individual stocks for newborns, Cramer suggests picking two — a stock with a dividend that could be increased each year and then reinvested, and a stock with some more growth.
The first kind of stock can be a share of a company such as 3M, Procter & Gamble, Kimberly-Clark or PepsiCo — steady, consumer goods names that provide healthy, growing dividends.
The second should be "something with a little more juice," Cramer said. He recommended the FANG stocks, his acronym for Facebook, Amazon, Netflix and Google, now Alphabet.
Cramer chose Facebook for its high growth and deep bench, Amazon for its powerful, yet still-small presence in the $4 trillion retail market, Netflix for its game-changing mission and Alphabet for its strong balance sheet, stellar advertising platform, innovative staff and self-driving car initiative, Waymo.
The "Mad Money" host said that investors who do want to set up an account for a young child or newborn should do so through the Uniform Gift to Minors Act, which allows minors in some states to own property like securities without a lawyer having to set up a trust fund.
The rules for this act change regularly, so Cramer recommended checking with your broker for the latest updates.
"I think it's one of the better tax breaks around," the "Mad Money" host said.
Cramer added that buying gold and silver can also be great insurance components to any portfolio, since they do next-to-nothing and can sit in a safety deposit box for years.
"The bottom line: when a child is born, think about setting up a Uniform Gift to Minors account and putting index funds or individual stocks in with the index funds. Or, at least, consisting of an S&P 500 fund and the stocks consisting of a growth vehicle and an income one [where] you let the income compound. A high yield can lead to a doubling by the time the child reaches 10," Cramer said. "Don't put this off. This must be done at the earliest moment to get the most time involved for your brand new loved one. No one has ever regretted this idea."
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