It's all over the map. 88 orders this year so far for one person. Some trivial things I'd probably have searched in the grocery store for normally, e.g. toothpicks. Though now I'm sort of "Why would I bother searching?" But also office gear. Stuff I'd have picked up at the pharmacy. Pandemic entertainment options. Etc.
I buy a number of personal products somewhat regularly. Things like deodorant, beard oil, toothbrush heads, etc. There are also things like pet treats and with one click it's pretty easy for people to purchase four or five things as they go through their day.