When you buy food items like fruits, or vegetables, make sure you wash with hydrogen peroxide or vinegar before storing them in your fridge
When you come back, don't rush to hold children or give them your bags to hold, make sure you clean all the items in the bag before storing, you can use disinfectants.
Wash your hands after
You can use disinfectants to clean those surfaces. Table tops, counters etc.
Also, clean things you use regularly, remote controls, laptops, phones, toys, use a alcohol based cleanser