You’ve probably seen these around, even if you weren’t sure what they’re called: shaker cups or bottles are usually BPA-free plastic or metallic drinking containers, which might look somewhat like just a regularstainless steel bottle. They usually have a flip lid that attaches tightly to prevent leaks or spills, and might come with a built-in straw or a simple flap opening.
People have been using straws for a long time (some sources say 6 or 7 thousand years!), so there are some great advantages. When thinking about what makes straws useful, there are two angles we can consider: practical, and healthy.