My condolences on the loss of your husband. I tend to focus on safety a lot. You probably already have these things:

I’ve read there are safety alert devices you wear on your body that will alert if you fall.

Also, doorbell alarms and outside cameras so you can be alerted to anything suspicious. Motion activated outdoor lights.

Nightlights inside in all areas of house.

A list of medications and allergies on the fridge.

A cell phone with backup battery powered charger in case phone or power goes out.

Having someone check with you daily is very important with a predetermined time. I’ve heard a lot lately of some people who fell and were injured and they laid alone in the floor for days because they couldn’t get to a phone. People called, but just thought they weren’t home.