Let me preface by saying that this is NOT a post about sterilizing or disinfecting everything in your home.
That would be nearly impossible. According to CDC guidelines, you should be using regular household cleaners to clean frequently-touched and used parts of your home like doorknobs, light switches, faucet handles, toilets, and sinks. The act of physical scrubbing, as well as letting any water dry on surfaces, is one of the most effective ways to decontaminate a surface (besides just straight up using bleach).
Many of the methods below utilize household items like baking soda and vinegar, and it's important to note that these things are not proven to be effective against coronavirus. But — these are ingredients that we're likely to have sitting in their pantries or under their kitchen sinks (important while we're not leaving our homes!), and are a cheap way to clean many things around the home that haven't been cleaned — until now!