Here are the possible solutions for they're used for s w a k clue
Answer
Clue
Relevancy
beds
Clue
They're made after they've been used
Definition
BED, to provide with a receptacle for sleeping
moet
Clue
"The ___ and Alize keep me pissy / Girls used to diss me / Now they write letters 'cause they miss me" (Notorious B.I.G. lyric name-checking his fancy champagne diet)
tba
Clue
Letters the Bluths put on the invitation to a fundraiser they couldn't think of a good cause for, which eventually became the fake disease they used to pocket all the donation money, on "Arrested Deve