I have still have water bottles from 1975. I know it's wrong, but I just can't toss them. I have water bottles that are brittle. I have bottles that have such a bad plastic taste they are unuseable. Bottles that leak. Bottles that don't match, or go with anything I own. Bottles where whatever logo they had is long scratched up and unreadable. I have a set of large and small black water bottles, and how stupid is that? I have spare water bottles that are unused -- just in case. I just bought two new ones just because the color was closer to my bikes color.
This thread makes me want to go shop for water bottles.