In Germany a popular kids rhyming scheme is called "Elfchen", which means little eleven, but is also a nice pun for the german word for Elves. It consists of 4 lines where the first is one word, the second two and the third and fourth consist of 3 words. Its more a little nonsensical thing really.
I have made one for my own amusement today and imagine it sung by very young elvish girls as a kind of nursery rhyme:
Elein cuiasser lhein.
Im elleth gwein.
I can't really translate it to also rhyme in English, so here is just the literal translation:
Elves live free.
I am a young elven maid.