Quick shout-out question: embedded graphite splinter

[bktheirregular]

So kid brother comes home from class, and it turns out that he managed to jam a pencil into his hand by accident, and a sliver of the graphite core broke off and lodged deep in the fleshy part of his thumb's lowest joint.

Lacking a very fine set of tweezers, is there some sort of folk remedy for this? Or is it just safer to leave the graphite sliver be? (It's in there fairly deep; can be seen as a black mark on the flesh.)

Pencil graphite's not poisonous, is it?