Highly think it depends on your appetite? If you want guarantee and safety then just buy stocks of big companies. If you want something risky then go for Bitcoin! We'd probably see the market going crazy next year anyway so the best time to buy is now imo. Even the dumps and pumps we've had the past few days seem normal in hindsight imo. We've experienced FAR worse after all.

Just always remember to invest what you CAN actually lose though, regardless of what type/form if investment you do. It's pretty common sense at this point imo but it's not normal to invest money you want to spend (or need to spend) in the near future. It's called an investment because it's for the LONG term.