A mysterious small object that creates an alarmingly loud ring as it shoots up the vacuum cleaner hose and disappears before you've had a chance to see whether it's something worth digging for in the vacuum cleaner bag innards to recover.
Speaking of useful words, a while back I came across a wonderful word for marks that look like writing but aren't writing--think of the marks in some of Cy Twombly's work, or imagine fake calligraphy. Does anyone know this word? I've been unable to remember it. It's something I'd like to recover from the vacuum cleaner bag that is my brain.
[Update: Someone has reminded me. The word I was looking for is "asemic."]