What does Santa's Christmas elves wear at the tip of their elf shoes?

They are turned-up so to speak and have bells on the toe part, this is a common idea for elves, court jesters, etc. ring a ling a ling ling, ling, ah, bring on the Ronettes, Estelle, what is that Halo over your hear, oh yes, I know. ( Estelle is now lighting up the sky- upstairs, by the way there is a Comet Bennett!