The liquid, easy hedge is to buy the GLD ETF. Consider SLV (silver) as well. Both are going up-up-up so you may want to consider waiting for a pullback.
Some people will argue that physical gold is your only real hedge, as in the face of a stock market collapse, the ETF’s could decouple from the spot price of gold/silver and lose value. But, we’re talking massive collapse, like get your guns and canned foods. In all other cases, the ETF’s should track the spot price of gold/silver reasonably well.