Practical
These are handy little gadgets, lightweight and practical.  It's good they come in a 6-pack because I destroyed my first one.  I tried to open from inside, and it opened okay but would not collapse again.  It turns out you are supposed to pull the string on top, and the whole thing pops open.  Whodathunk?  Obviously, not this mechanically challenged person.  Despite that, the 5 remaining ones are very useful, and I now know something new.
Rating: 4 stars