Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

How can I invest my $100?
A safe investment would be to get a 5-year CD from Ally Bank.  No minimum deposit and no monthly maintenance fees.  1.74% APY at the moment.  I would choose a 5-year CD since the early withdrawal penalty is only 60 days interest, which will be negligible for a $100 investment and increasing the term significantly increases your interest rate. Regarding other suggestions: Even if you find a way purchase stock commission free, it will probably cost a $5-$10 commission to sell, wiping out probably a year or two of gains.  Also, I-Bonds must be held for a year minimum, which is problematic. At the end of the day, it's probably not really worth your time to do any of these.  $2 a year or $5 a year, it's still fairly insignificant and your time is surely worth more than that.