This is a brand new character Tsumamare "Pinchy" phone strap of Megumi from Saekano. You can connect this strap to your phone with the plastic plug provided.
Character: Megumi Katou (加藤 恵)
Series: Saekano: How to Raise a Boring Girlfriend / Saenai Kanojo no Sodate-kata / 冴えない彼女〈ヒロイン〉の育てかた