Statue and Vase have similar effects:
After you complete this, transfer two materials from the floor to your craft bench.
After you complete this, transfer two materials from the floor to your sales.
Since using effects is optional, one can complete either of these and not take materials from the floor.
What if the floor has only one card? Can you use either of these take that one card?
Suppose that the floor has more than one card, but you want to take only one. (You might want to do so with Vase because of limited cover; you might want to do so with Statue because you want to leave a card for a subsequent Monk action.) Can you do that?
An earlier discussion of Robe (not fully resolved) suggests that, if the floor contains two or more cards, you cannot take only one.
The Robe discussion doesn't apply to the case of there being a single card on the floor.
I could see an argument that Statue and Vase each say, "transfer two materials from the floor," and if there aren't two cards there, you simply can't use the effect.