There are several items that I buy on a weekly/biweekly basis such as spinach for green smoothies and greek yogurt for lassi, etc.
But my favorite…is candy. Even if I can manage to stop myself from buying it, I will still spend a few moments staring at the selection. And I go through phases. For a while it’ll be a Ferrero Rocher phase and then I’ll tire of them and move on to a Reese’s phase. These days it’s Hershey’s Take-5. Contains caramel, nuts, pretzels, peanut butter, …and possibly crack. It’s addictive, but I think the phase is ending soon.