Maybe bits of Sellotape on the ends of them to keep them from doing anything alarming? (bookbrowse.com)
On the eve of the World Cup final, and after a 100 % record of predicting all the knock out matches thus far, Adam was first handed the usual two food containers with the flags of Uruguay and Germany placed on them with sellotape ahead of the third placed play - off. (caughtoffside.com)
My husband once got so cross at always having to search for sellotape that he made a «sticky things» drawer, which of course now never contains anything remotely sticky! (mummymummymum.com)