(n) plural. we're talkin' serious knick-knacks, tchotchkes, trinkets, gewgaws, bric-a-brac, usually in wide array, impressive splendor and/or great quantity.
Dude, did you check out the plethora of ceramic clown figurines over there? Oh, the knick-knackery.
So, uh, what kind of knick-knackery are we lookin' to get Grandma for her birthday this year?
Just got a deal on three crates of top-of-the-line knick-knackery, fell off a truck on the way to the Dollarama in Orlando.