Solve the following riddle by determining what 'it' refers to:

What would you look for after you got it? Perhaps it is something undesirable that you got by accident. Perhaps it is something that you are trying to remove and discard. When you can't find it, you bring it home as something unwanted.

"The wood" could refer to a forest, but it might also refer to a plank of lumber. What could you get from wood that would be hard to find? The answer is a splinter. It could be hard to find in your hand, so you would carry it home.