I recently got into 3d printing, so it's a lot of stuff related to that lately. Before that I was learning how to sew so it was a sewing machine and stuff for that. I've been into light woodworking projects and metalwork as well and so there's often something coming for my workshop - Japanese saws, various bits of hardware, a tap and die set, welder, and so on. There's a constant flow of books and video games for myself and my kids.
Aside from hobbies I order stuff for my dog (medicated shampoos, supplements, dog treats) and lots of household stuff (air and water filters, light bulbs, lawn mower, irrigation system parts, plumbing and electrical parts).
For personal goods I get some clothing (shoes and socks), office supplies, batteries, vitamins, etc...
My car battery seems to be dying so today I'll ordered a charger that has a repair mode and if that doesn't work well enough I'll probably order a new car battery from them.
My purchases basically fall into three buckets. Grocery store items, clothing, and everything else is Amazon.