A 17th century word deserving of a comeback, a "muckinder" is that clean cloth all parents of infants keep handy for mopping up drool and burp-stuff. It's a synonym for burp-rag, drool-cloth and schmatta, but it has seniority over those other terms and it's so much more evocative!
"Honey, where's Junior's muckinder? Quick! Oops, too late!"