I have locks but no key. I have something that sounds like a curse but is not. A famous one sounds eerie but I am not haunted. Mars has none. You have one in each ear.

If ‘THREE’ is what you took, Then merged it with what’s done with books. You’d be sew needless to this line. Re-wrap the spool, Needlefish hooked!

I spin but never take a stroll, With whirring blades I play my role. I chase the heat and cool the clan, With just a plug, I start my plan.

I divide without hate, protect without force. Good neighbors love me, to keep peace, of course.

Traffic jams test me, toddlers lack me. What am I?