In this paper, we report an innovative technique for the rapid and simple synthesis of ZnO-containing paper ash (ZPA) within 30 min. It is demonstrated that as-synthesized ZPA can be an alternative for conventional semiconducting filler that is used to improve the electroactive beta-phase content in the electrospun PVDF nanofiber (NF). Furthermore, the PVDF nanofiber-based nanogenerator (NFNG) that enables a high output voltage of 4.8 V under an exerted wind pressure of 145 Pa is fabricated. In addition, the detection capability of minute wind pressure, even from human mouth blowing, makes the NFNG an active sensor that might be utilized for charging a mobile phone during conversation. Thus, this strategy is expected to be a promising platform for harvesting wind energy that is beneficial for the design of integrated self-powered wearable electronic devices.