I exclusively use PET bottles for every day drinking container (cheap, reusable, extremely durable, recycle whenever it gets unpleasant). Based on those experiences I got some of these baby PET bottles a while ago.

Sorry to say, but for me they became a solution looking for a problem. The things I would like to keep absolutely waterproof typically don't fit in there, or would be a pain to remove. The things that do fit ... do not require such a sturdy, bulletproof and waterproof container, and will pack much smaller in other bags, pouches or containers.


The only thing I could use them for would be liquids in small quantities and the cotton / vaseline trick (using a small string or whatever so I don't have to pull them out with a stick). I have filled some cooking oil into one and put a regular drinking cap on for easy pouring. This is a semi-long term test of how this solution will endure temperature fluctuations and long term abuse. Cooking oil is something I really would like to keep absolutely sealed in such a small container and not worry about spilling oil on my gear. The weakest point is the drinking cap, I have some doubts about that one.


Oh, remembering today's USB stick thread actually I could use them for my USB memory sticks... That's 3 applications that actually could be useful for me. Hm... maybe my impulse buy wasn't so bad after all.