Travelers must get desperately thirsty zipping through the space-time continuum, and one shouldn’t trust the quality of the tap water in a time warp, I’d think. (The “Doctor” character in the famous British TV series Dr. Who has the power to regenerate his body when near death… I guess that means both he AND his licensed single-use container are recyclable!)

Photo: Approved by Dr. Who water by St. A on Flickr