I use Alexa to add to my grocery list over the course of the week. If I run out of an item (e.g. Use the last of the milk, run out of butter, notice I'm getting low on bread, etc.), I just tell Alexa to add it to the grocery list. It's faster than whipping out my phone to do it and it has made building out my grocery list more reliable. (Inevitably I would struggle to remember everything that I needed to get when I would wait to do it at the end of the week)