Hi prispal. You can use a Life Straw water bottle for washing and rinsing, and those individually wrapped 70% isopropyl alcohol wipes will work for sterilizing. We were recently in the British Isles and could not get either hydrogen peroxide or 70% isopropyl alcohol over the counter; one pharmacist told us we had to mail order! This surprised me as we had easily bought a bottle of hydrogen peroxide in Paris two years ago. We ended up getting a handful of the wipes from our ship's medical officer and they worked well enough until we got home and I sterilized everything in the microwave steam bag. Have a wonderful trip!