I notice my sister, the talented CraftyTokyoMama, has two Halloween themed grocery bags for sale in her Etsy shop at super-reduced prices–under $10, including shipping straight from Japan! I have several similar bags, and I can attest these hold up for YEARS. Wash, dry, re-use.
The jack-o-lantern pic above is shown with 8 quarts of milk inside to demonstrate how much it holds. The purple one is slightly folded flat. These roll up to about the size of a child’s fist, so easy to carry in your pocket or purse while doing your shopping.
CraftyTokyoMama’s Etsy shop is here. I bet these won’t last long!