Odyssey gyro and slick cables
Odyssey Freq-g tires
tubes (generic)
grips, but I'm not picky
Odyssey knarps
Odyssey Twisted PC pedals
Pretty much just stuff that wears out or gets lost easily.
Anything that costs much has such a high markup and lasts so long that it's usually not worth buying locally.
BTW, this is stuff I have bought at a local shop in the last year.