Here is one quick tip how to invest 10k. Take them, open a broker account and follow trades of best forex signal providers.
These forex traders are having 100%+ ROI every year. So you can simply auto copy their trades on your account. Can you imagine how much could you earn in couple of years with this kind of returns if compounded? Just quick example: your 10k with 100% return on investment compounded yearly would give you 320k after 5 years. Would you like that?
Check best forex signal provider´s performance.
Note: some providers are more risky than others, so before investing check their stats and performance carefully and do not risk more than 2% of your capital on a single trade.