The Thingamajig

What word do you use when you can't remember the name for something? Thingamajig? Doohickey? Whatchamacallit? Whozeewhatsit? Rilla Alexander has a hoot of a time with all those madeup words we all seem to use and with the nonsense words other languages have invented for the same fuzzy meaning, which are all silly-sounding enough that this will make a wonderfully goofy read-aloud, especially for kids who are just waking up to the wonders of words and things.