The term used for the gathering massive amounts of "free" items at local fast food stores, convenience stores, coffee shops, etc. so that you do not have to purchase the items at the grocery store.

This includes extra large handful of napkins, ketchup packets, sugar packets, extra BBQ sauce and so on.

Literally everyone, ever. Including the writer of this definition.

Urban foraging is a process of sorting through the dumpsters, gargbage bins, and other containers of waste to reclaim "wasted" food.