Buy stocks. Especially TESLA. They are going to rule the car world. The era of Oil is about to end.
You can alternatively invest in some lithium mining companies, battery/energy companies, solar-cell companies...
Keep mind when you say buy TESLA.
Youre assuming the person can afford those shares lol. But I`m assuming anyone who already holds shares in stock means you have minimum of $100k in the bank not worrying if the stock does well or not.
Yes, tesla has been proving its sales with the current tesla models, but whos to say a re-call of cars wont happen which might hinder price. Other related events..
I think the best approach for anyone getting prior to any form of stock, is learning the difference between "trading" and the whole "buy and sit on the position regardless" scenario.