I actually do some work with FX trading. It's a pretty ridiculous way to invest. It's mostly done as a hedging strategy when you're purchasing foreign stocks. Anybody willing to exchange small amounts with you is going to give you a lousy exchange rate. Unless you've got some predictive powers that actual experts in the field don't have, you're probably going to end up losing money.
Personally I'd put money into a solid shortish-term bond (short term because the interest rates are so low right now, you'll want to cash out and put money into a higher interest rate in the future - just a wild guess that interest rates will eventually increase for some reason), if you want a safer investment than stocks. Not a bond fund, an actual bond, there's a big difference.
But I'm not an investment advisor so do what you please, I'm just some shmoe on the Internet, among many.