And picking the item from a list. I can sometimes make guesses based off the item names, but they're only guesses.

[he shrugs, smiling sheepishly.]

... But while that was the big secret, there was something else about it that I wanted to tell you for practical reasons. I get rewards for completing my tasks, and they're also items from Scrap... with the same effect, essentially. [boosting energy, mental clarity, etc.] Though mine aren't limited to the week I receive them in, unlike the ones he sells publicly.

So if you ever need one and can't get one of the limited ones, you know where to find me.