2 to 3 years is not a long period of time. While market returns can be higher over long periods of time we're definitely in a very volatile economy right now.

You could try some CD laddering and HYSAs while the rates are at an all time high. The key thing is to diversify your investments while reducing risk. Your down payment needs to be quickly accessible if you find a house that you want to buy.

Government bonds are also a very safe investment and with the rates at a very high peak, you can buy up some bonds and sell them off at a profit when the rates return to lower values