I buy these little pods that turn into hand towels when wet. They're the best for the outdoors or anywhere where you need a towel to wipe your hands or clean something.

I also buy Sensodyne with novamin which you can only buy from Europe. Novamin isn't allowed in the US without paying for a $pecial procedure from your dentist so this is one of the best over-the-counter ways to treat/repair sensitive teeth.