* Do you want an extra pair of expert eyes to check over your work? 
    * Do you need an IA (inspector) to perform an annual inspection
        on your aircraft?   
    * Got a project that requires the supervision of a mechanic?  
If the job is outside the scope of what a owner can legally do or out of one's comfort zone, then selection of a needed licensed person may be made from a bulletin board with cards or ads from willing professionals.  These are independent contractors and all terms are strictly between the mechanic or inspector, and the pilot/owner.