Mine your network. You can wait for your manager to find your next colleague or you can recommend someone you’d like to work with for the position instead. The benefits of moonlighting as your company’s HR representative are many.
Your friends will appreciate your thinking of them. Your manager will notice your investment in the company’s success. The chances of you working with someone you respect improve exponentially.
Also worth considering: The better the candidate looks, the smarter you appear. It’s because we tend to assume people are similar to their friends, which makes recommending an outstanding candidate a shrewd career move.