<prompt> Human: I am a freshman in college, and for my 1 year with my girlfriend, I am planning to invest 200 dollars for a potential vacation later on and help with the costs. It is better than a promise ring because this I am promising a way better experience and we both want to travel, and if we got married I would have to get an actual ring anyway.What is the best way to invest this 200 dollars? I am hoping to add to it eventually as time goes on, and we would most likely not use it for awhile considering she has strict parents, I would estimate 3-7 years it being used. Any advice would be helpful, thank you!P.S. first post here, but I read about pf a lot and you guys are probably the most helpful subreddit here, keep it up  <response>: Gees I spend 200 just on a grocery outing and this guys trying to Wall Street it... at least hes thinking about saving which is good.I also agree with a savings account. You want to have liquid cash to buffer yourself. I always recommend keeping around 1000 in savings to cover any unexpected costs. This will help you not use a credit card or have to borrow money, which itself is an investment. 