Thanks for the quick replies. I will start work on all of those now. I do need someone to test this thing and tell me that it really does work, too.
Maybe barrel lids could be crafted from barrel + axe?
Someone posted that they were removed in Alpha/Beta because they had balance issues as they made traps too easy. Perhaps Barrel/Crate instead of Barrel Lid?
Edit: Then again, I do not know how many types of barrel there are. Tricky.