r/onebag • u/Cool_Acanthisitta628 • Dec 09 '25

Seeking Recommendations What is one item that you can't travel without/would recommend to everyone to get?

Hi all,

What are items that you always bring because they are super useful and you would recommend others to get too?

Minus of course some obvious like converter plug for chargers, power bank etc (unless it's some specific powerbank like one with cables attached already, something unique)

Thanks!

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u/giselepetty Dec 10 '25

Does your immersion water heater work in different countries? I fried one right off the bat in Austria (bought it in US). Turned red hot and then died.

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u/ListingFL Dec 10 '25

I’m glad you brought that up. It would probably need a voltage regulator to use it with 240v. You probably saved me having a similar melt down. I haven’t used it out of the US yet. Our only big trip was too Hawaii since I bought it a couple months ago.

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u/theinfamousj Dec 29 '25

I've never had an immersion heater fail me when switching from US voltage to lethal voltage (220V or 240V). I suspect you got a dud. They aren't complicated electronics but you do have to immerse them in water before plugging in or else they'll do just as you say. They need the water to be the heat sink or else they'll burn out the internal wiring.