The phrase "a tiny bag of" is correct and usable in written English.
It can be used when describing a small quantity or size of an item that is contained in a bag.
Example: "She handed me a tiny bag of marbles that she had collected over the years."
Alternatives: "a small pouch of" or "a little sack of".
According to Jose Rios, a 27-year-old from the Lower East Side who pays close attention to Manhattan nightlife, a tiny bag of PCP-laced mint leaves -- enough to get four people high -- costs $10.
He hangs a string from each point, and connects the hanging strings with cross-strings to simulate beams, arches and vaults, attaching to each string a tiny bag of lead pellets, care- fully scaled at so many milligrams per pellet.
Other rituals command him: emptying a tiny bag of heroin into a plastic bottle cap, adding water and heating it on a small flame, drawing the hypnotic broth into a syringe, hunting for a plump vein and feeding into it the fluid warmth.
Only a cruel and exacting taskmaster would expect the children to venture forth from their sports event without, at the very least, a tiny bag of pretzels.
When it was my turn to be searched, one of the cops looked between the singles in my wallet and pulled out a tiny bag of what he called "hooch".
The only problem is how to dunk a laptop in a tiny bag of rice.
My local branch of Sainsbury's offers three or four varieties of rocket, but I had to hunt hard to find a single tiny bag of "baby watercress" which proved to have about as much pungency as dijon mustard (indeed, the plant's heat comes from its mustard oils).
There is nothing worse than having a few small objects in a HUGE bag or something BIG sticking out of a tiny bag.
I got four balls of cinnamon-sugar-covered dough in a tiny bag.
Without a thought of his blood being infected, I carefully poured the tiny bag of heroin into his cooker.
In April 1997, she moved into Aubergine with her tiny bag of tiaras and other sparkly things.
