Houkes and Meijers have pointed out that you cannot make one of these things from foam, nor can you use foam as one of these things. For 10 points each:
[10m] Name this thing. In Being and Time, Martin Heidegger used this specific tool as an example of something that is “ready-to-hand”, as we understand it in terms of what it does, rather than what it is.
ANSWER: hammer
[10e] Building on Heidegger, Graham Harman has written about the “broken hammer” of this Italian writer of the Divine Comedy.
ANSWER: Dante Alighieri [accept either underlined portion]
[10h] Although similar formulations predate him, this thinker sometimes names the observation that “If the only tool you have is a hammer, it is tempting to treat everything as if it were a nail”.
ANSWER: Abraham (Harold) Maslow [accept Maslow’s hammer]