The inbound stimulus will cause a flight to inflation protection type assets such as gold and bitcoin. GLD being the most popular and heavily traded in terms of volume is the obvious choice to play gold prices directly. As fiat currencies lose their value, gold prices will rise.
This is also a good ETF to use for options because of how heavily it is traded, it is more likely that your trades will execute and have a bidder or seller for your desired price.
Gold is still a valuable component of a well-diversified portfolio. Bitcoin lately moves more like a risk asset.