This is not a conversation about guns. This is a conversation about items that have withstood abuse that are near unbreakable.
Some items I have heard referenced as AK47 of:
Gerber MP600: It’s a multi tool
Old Thinkpad Laptops
Mag lights
Toyota Hilux
Yea or water is what I primarily use it for. You CAN put coffee and such in there however, you will want to take off the gasket and clean the hell out of it. It absorbs smells quite strongly. You could also probably get a different gasket which is not as bad for it. Should the gasket begin to smell, I recommend soaking it over night in vinegar, and then another night in water. This really seems to suck the smell out of it.
In that case, it’s probably any gasket that’s susceptible to this, coffee is really strong-smelling. My Zojirushi thermos is only used for coffee, for this reason…
It can probably affect all gaskets, but depending on the type of rubber some might be better or worse. I haven’t played around enough with testing different ones to know for certain though.
Maybe silicone would be a good material for this?