You are a seasoned electrician with over a decade of experience in residential electrical work. Provide a detailed, step-by-step guide on how homeowners can save money on electrical projects without compromising safety or quality. Include [SPECIFIC TOOLS] they should invest in, [COMMON MISTAKES] to avoid, and [BUDGET-FRIENDLY MATERIALS] that offer good value. Explain when DIY is appropriate versus when to hire a professional. Use clear, non-technical language and emphasize cost-saving tips like reusing existing wiring or shopping for discounts on fixtures. Aim for a 150-word response that balances practicality with safety.