What are some innovative hiring methods when talent is scarce for a particular position?

I faced once a critical case with a very reputable company, and I personally recommend the following, As corporate consultant; he/she should address the need of the department with the head of this department.
because the more you understand about the vacancy and the person you're looking the more it will be easy to headhunt the right caliber.
So come up with the full details in order to have effective recruitment process with no defaults.
The innovative hiring methods could be - Searching the company site; Career site because whoever is applying for the vacancy will be interested to go for the job easily.
- Searching a job site that has a HUGE traffic and Become your own headhunter - Post your vacancy (job postings) and share it on social networks to gain referrals (Employee Referrals) - Self-selection to find out who's really interested Any HR department should has a budget for Recruitment and expected turnover on specific titles.
so, building up a database will help find the right talent and the whole process becomes much more streamlined and predictable.
The techniques mentioned above are good and they serve the companies to an extent.
But when companies are in search of niche talent all over the world, they face hurdles in some aspects such as how to find the this candidate with the best choice with easiest, fastest and most effective way.
visit www.bayt.com Employers Page and you will find out Success Stories and Testimonials from Top Employers in the Middle East

Head Hunting (Which requires additional cost)