How does craving (taṇhā) relate to neutral feelings? How does craving (taṇhā) manifest with respect to neutral feelings?

In Dependent Origination (or dependent co-arising, however you'd like to call it), it is said that Craving (taṇhā) follows on the heels of Feeling (vedanā). Feeling, in general, is of 3 main types: pleasant, unpleasant, neutral.

I do see how craving/aversion manifests with respect to both pleasant and unpleasant feeling. But how does it relate to neutral feeling? How is it that I either lust after or try to avoid something that is truly neutral?
Taṇhā doesn't automatically have to relate to neutral feelings. Remember, the twelve links of dependent origination are talking about nessisary causation, not sufficient causation, so when the Buddha says


  [W]ith feeling as condition, craving [comes to be]


the meaning is that feeling is necessary for craving to arise, and without feeling, craving can never arise. But it does not mean that if there is feeling, craving will always arise.