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Hydroflask Tumbler
I cannot stress enough how much you need a tumbler in your life—especially in grad school. You don’t need a lot; you just need one good tumbler that you’ll actually use. I keep mine with me so I’m always drinking water during experiments and long office days.
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Pros
- +Helps you stay hydrated throughout the day
- +One good tumbler is enough—simple and practical
- +Easy to keep at your desk or bring to campus
Cons
- -If you forget it at home, hydration becomes a struggle
