mutual funds and index top 50 shares are safe bet
Actually you can buy and sell something in real world .
There are numerous ways thankfully to make money, you just got to find your niche.
Bitcoin, but you need to ensure that you keep an eye on what you invest.
Buy BTC but space it out to maybe $100 every week or so.
Been trading forex and crytpos for some time now and me and a group have been reading into conspiracies with XRP (crypto currency.) We suspect to see it break rather quickly due to banks liquidating and some other details. Right now it's worth around $.40 the charts are showing a potential jump to 450-589. Could be long term - 2 years if the jump in june/july doesn't happen. Regardless, it will rise.
some part it invest in yourself to improve your skills and then either put it in a mutual fund or is you are techie create some apps/websites
buy a couple of old domains, add some nice content , and start earning by putting content on your sites
Sell them on flippa
Look into crypto, if you get good at trading you can make alot of money
You might want to research deeply first to spend your thousand dollar. Invest it first in the books, training or courses. it will make you rich forever