There are two instances where I'll need to know whether the player as a certain item. In one, I'll need to know if he has at least one lockpick. In the other, I need to know whether he has at least one unit of juniper berries.

What would be the best way to do this?

GetItemCount exists both as a Papyrus function and in the Condition system.

Manny thanks! I was picturing I'd have to cycle through all the items with some condition. This couldn't be easier