An Alexa or similar "smart" device, or any sort of smart home device.
Cigarettes.
Illegal drugs.
College tuition (undergrad was scholarships+parental funding, grad school was full scholarship).
Childcare/daycare.
A pool or related supplies.
Flatware (we're still using the set received as a wedding gift).
We've bought most other household items on people's lists in some form because we received our wedding gifts and bought our home almost 2 decades ago, and appliances and other things wear out over time.