One thing I really like about Ocean State Job Lot is they have a couple isles of really cheap fun timeless kids toys that I remember playing with as a kid. I think for a lot of lower income families it's probably one of the only times a kid gets the thrill of walking into a store and selecting new toys to buy.
I like their ultra-cheap scientific calculators (their markup is 100% from the Alibaba high volume price, but still cheap) and art supplies. I bought a metal ruler from them once, only to find that it had a misprint on the scale.
