Need Ideas of where to invest extra cash

[Joseph Rios]

Hello BP community,

I have about 15k in savings. Where can I invest this small sum of money (compared to the loads you need in order to purchase an investment property)? I was thinking of getting my sister to buy a multifamily unit using a conventional 5% down loan and use me as a cosigner so she can qualify for more (I already used up my first-time-home-buyer-owner-occupied-5% down conventional loan). I live in NJ so any ideas are welcomed.

Thanks!

JR