One such thing you could usually find somewhere under the bed was the old-timey rectangular wooden train whistle, where you'd blow into it to make a steam-engine "wooo" like a low pitched tea-kettle. I definitely remember just walking around with the thing hanging out of my mouth, breathing in and out, and creating a "woo" "woo" "woo" over and over. It was guaranteed to annoy any adult in earshot. Afterwards, pulling away always left the after-taste of cheap balsa.
All aboard for 2013!