We've got Dollar General and Family Dollar stores around here everywhere. Usually in the more remote areas that make easy targets for the thieves. But my go to dollar store is "Everything is a Dollar". I've found that true, with one exception. Cans of Vienna sausages are 59 cents each.
Reading glasses in any magnification you could ever want and made in China so you know the quality is on par with Foster Grants: $1 a pair.
Silk flowers. Every kind of vibrant silk flower you could ever imagine with realistic plastic coated wire stems. $1 each. I can dress up the vases on the bronze tablets of my family members out at the cemetery for $20 every couple/3 months when I go see them. The old ones will still be very usable, so instead of throwing them away I randomly walk amongst those memorials without flowers, read their name out loud when I wish them well and place the flowers in their vase. Mother's day the ladies get them, Father's day the flowers go to the men.