I just leave my Sonicare at home. I've looked for 'travel sized' replacements. But the ones I've gotten off Amazon don't make the cut.
They tend to 'just vibrate' instead of giving you that mysterious 'sonic cleaning' - and typically it's the handle that vibrates instead of the brush head.
Basically, they're vibrators with a brush stuck on end. So if you have a spare pocket-rocket laying around by your bed - duct tape a toothbrush on it - and you'll get the same experience.


We went back to throwing some of those travel Colgate manual toothbrushes, (that fold over into themselves). I think they cost about USD $2 each, and we bring a couple and throw away when needed - or when we return to the hotel an find the bristles wet after the maid has been in (and they should be dry!!!). I think I can floss and brush my teeth manually while on vacation.

My Sonicare did come with a case, and you can buy them separately on Amazon, But they were huge and not worth it.

Good luck!