My all time favorite gloves are the Harbor Freight "Hardy" branded work gloves they sell for about $5, sometimes cheaper. Black, machine washable, velcro closure, they fit me perfect (X-Large), I have around 10 pairs! I bicycle, roller skate, do garden work and etc., have a pair in my car for those colder driving days. So comfortable. And I don't have to adapt them, they're perfect as is.
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Best thing I ever got from a dollar store I have in my kitchen and I use it several times a week: A perfectly fine and rather well featured and functional personal calculator. The calculator I have at my elbow now I bought about 1980, and it's tiny. It was only a handful of years since the first ones came out, which were much bigger. This one I bought at the university student store. I asked the clerk how long the battery would last and he said 2 years. I've never changed the battery! I think the LCD display is a little dim but it's still working.
Another thing I got at a dollar store that works fine... several finger nail clippers.
I haven't been in a dollar store for a few years. I'll go if I think they'll have something I want at a price I like, doesn't happen much. I get the impression that people go there for two concomitant reasons:
1. They haven't got much money.
2. They feel compelled to be a part of the consumer culture.
A GF of mine called it "retail therapy." Not specifically dollar stores, just the positive feelings you can have when you shop.