Keep blades sharp. A dull blade requires excessive force and can slip which causes accidents. Always use the right tool for the job. Repair or discard tools with cracks in the wooden handles or chips in the metal parts. Don't drill, shape or saw anything that isn't firmly secured.
Oily rags are spontaneously combustible.
Take care when you store and discard them. Don't abuse your tools. Keep a First Aid Kit on hand. Do not work with tools when you are tired. That's when most accidents occur.