There are some items I find at Harbor Freight on sale like safety glasses for $1.50 a pair that I can't pass on. If I buy a nicer pair for $10-15 it'll still get damaged, scratched, lost somehow. It's amazing if a pair last me a week so when they put them on sale I buy 4-5 pairs. When I'm on a job that requires constantly wearing them------same deal with the gloves, also MUCH cheaper than anywhere else I'll save a few buck and don't stress out when they don't make it through the week.
They also have some other "throw-away" stuff they put on sale as a "loss leader" like the mini-mixing paddles. I mix a lot of 1 gallon or 2 gallon units of epoxy or urethane. I also like to use the drill motor and paddle to mix Feather Finish if it's much more than a handful. For patch the paddle will last but for the urethane I can use it a few dozen time, spin it out, wipe it down as much as I want but eventually it's too much hassle and it gets tossed.
I got the Chicago variable speed multi-tool as a gift. The tools is very "light commercial"------meaning it's NOT for professional use. But I don't depend on that for much on the jobs. It's a cool little tool to have for very light duty trimming back of wood, plastic or soft metals where a chisel or other chipping tool is awkward or slow.
Can't think of any of their other actual tools or equipment I would consider using in my work. They are the lowest grade on earth.......kinda like shopping at the 99Cents Only store. There's some things you might consider buying in there. But you know walking in it's going to be CHEAP.