Here are the possible solutions for they may be last clue
Answer
Clue
Relevancy
chips
Clue
They may fall where they may
Definition
CHIP, to break a small piece from
rockbottom
Clue
With 133, the name of the band whose members appear in the theme answers. (They disbanded in 2012 after raising millions for literacy, but they're reuniting this weekend for one last concert.)
ots
Clue
They may follow last periods, for short
rites
Clue
They may be last
ales
Clue
They may have big heads when they're drawn
Definition
ALE, a kind of beer, made without using hops as a flavouring, also YILL