We rely a great deal on the kindness of strangers. Sort-of strangers, actually. Much of our material is donated by our families or by businesses with ties to our staff and others. We were recently gifted with three gently used hot glue guns. The problem was that they were switchable between low temperature (105C) and high temperature (165C.) While 105C is hot enough to get your attention and even cause tears in a student, the burns are typically minor and painless after less than an hour. High-temp hot glue guns can quickly cause serious burns and scarring if not treated quickly.
So I broke them. Well, not exactly broke. I disabled the temperature switch after setting it to low temperature by putting a drop of hot glue into it.
Thank you, strangers. (The stranger in this case was Mrs. Mark, who finally decided to part with our in-home elementary arts and crafts tools. Our youngest kids are now in college.)