I never reuse stuff, but..
I never throw anything out.
You can laminate a few short pieces of the blade together and make a "rasp", mount it in a wood handle for nice, or duct tape the ends for "get-r-done." Loop them like a currycomb and scrap paint.
I made hole saws, but just used a circle groove in a board to "loop" the blade, blades for different types of frame saws, and small knife blades (X-acto like).
Grind the teeth off and use a short piece as a spring, capture the ends, bow the middle (like leaf springs). Grind the teeth off, fix to wooden shelf face, paint, and then you have "magnetic wood". Grind the teeth off, and use it as "shim stock".
Today I will gladly share my experience and advice, for there no sweeter words than "I told you so."