Interesting points -- Yes Its not a trauma kit. Its not comprehensive. BUT

Its a start, For $3 I can have some tools available. (or my kid in school, or travel bag, etc.) I have a $60 first aid kit...But most people don't. As a teacher, when I want people change their behavior, small step are easier.

This thread is for beginners who need simple ideas...and solutions that don't break the bank.

Start, then perfect. Not the other way 'round.