If your freezer doesn’t have an ice maker, or it just doesn’t make it quickly enough when you need to fill a cooler, a muffin tin can make some huge ice cubes in a pinch.
This one’s really obvious in hindsight, but I’d never thought of it before. Just fill an empty muffin tin with water, freeze it for a few hours, and you’ll have a collection of huge ice cubes that you can toss in a cooler or a pitcher of iced tea that you want to cool down quickly. You probably don’t need to have a tray of giant ice cubes handy at all times, but it could save you at least a few trips to the gas station every year if you plan ahead.
Since the tray won’t be very flexible, you may need to run some warm water over the cubes to get them out, but that’s a small price to pay for making so much ice so quickly. Once you’re done making ice, you can use the same method to freeze single servings of stock for easy storage.