<prompt> Human: My son has been earning money for awhile. He has around 1k in the bank, and its growing weekly due to the work he is doing. He asked about mutual funds, and I agree that its not a bad idea. Any good funds that he can put 1k into and leave it to grow?Looking for an invest and forget option. He doesnt want to be tied to a monthly investment, and may choose to add more when he builds up the nest egg back up to the current level.  <response>: Agree with the Vanguard recommendation. If its earned income, consider making it a Roth. 