Keep saving; that isn't enough money to try and seriously invest; plus, you might hit hard times and need cash.
I have $25k in lendingclub. My ROI is 18% so far, but it's sure to fall a bit once I get some defaults.
Not enough to do much damage yet.
Buy a house/duplex that can be converted to full-rental in a couple years and start building your RE empire. That's what I'm working on.
FHA on your first time around.Can't buy a house for $20k thats worth a shit. I don't recommend investing in RE until you can pay cash outright for the home you're renting, or atleast 75% of the purchase price down. The meager returns you get will be sucked up by repairs after tenants leave.