Moms at my new mothers' meet up are constantly sharing tips on how they help their babes sleep. Desmond, my kiddo, fights sleep like crazy, and definitely has to be "parented to sleep."
So far, we have probably a 90% success rate with putting him in a carrier and then vacuuming the living room. The noise and the motion seem to do the trick when other strategies have failed.
What have you tried at your house?