'bottomless supply' is a correct and usable phrase in written English.
You can use it to describe a seemingly unlimited source of something. For example, "The company had a bottomless supply of new ideas."
"Grams" was the hearth the family gathered around for a bottomless supply of warmth and love.
Ms. Coulter relies on 780 footnotes (she is a lawyer) and a bottomless supply of bile.
He has friends, a daughter, a telephone, a computer, and a bottomless supply of stories.
Cellphones and tablets have given people a nearly bottomless supply of games that typically cost a few dollars at most.
The nuns served surplus food from local restaurants and groceries, which included a seemingly bottomless supply of turnips.
Looking back, Sylvia draws from her bottomless supply of compassion for Michael, but it is hard-edged.
If you want a near-bottomless supply of written content, fanfic is where it's at.
They are gossipy, visually stimulating, and free — and the supply is bottomless, renewing itself by the hour for as long as humans continue to sin.
For decades, many labor economists said that China's vast population would supply a nearly bottomless pool of workers.
The magazine dealt with the topic of ID (the "mark of the beast" which will "control buying and selling") cards four months ago as well, so I sort of get the sense that Irvin and co. are running out of stuff to write about, though their supply of ominous graphics remains bottomless.
The sequence that ends "Bottomless" feels stretched in part but also supplies a powerful emotional coda.
