noun
safety frog charm
A good luck charm, often a small frog figure or keychain, playing on the homophone 無事帰る (to return safely). Used for travel safety or safe return.
旅行のお守りに無事カエルのストラップをもらった。
I received a safety frog strap as a travel charm.
無事カエルは「無事帰る」にかけた縁起物です。
The safety frog is a lucky charm that puns on 'return safely'.