Truly these sign boards are telling your daily journey and in my opinion you've found an imaginative and creative idea to share your daily stuff means you've pushed us into imagination through these sign boards and truly that road door is reflecting as Ninja stuff and it reminds those ninja movies where ninjas were living under ground.
And real fun aspect is your son's picture and literally that costume is reflecting funny, cute and adorable and in my opinion that is cool too and that costume is reminding the ninja movies.
Wishing you an great day and stay blessed. 🙂