Ways you can be there for others is by a simple phone call checking in on your friends and family, or arrange group hangouts with family or friends via streaming services. Another way is to arrange community events such as having everyone decorate posters thanking Doctors and Nurses, and leaving them outside your house for them to see on their way to work. Another way to show gratitude towards others is to arrange a basket or box of goodies and leave it at one's doorstep, to show that you're thinking about them during this time, and want to give them a box of fun items to brighten their day.
However to put all of this in short, the best way to show that you care about someone during these difficult times, is to check in on them. Let others know you care and ask what you can do for them