An instruction book that lights up when opened.

Magical display :

acrylic carved + LED band to light the sides

resources : 

• (4902) How To Make A Magic Book with Lighting Effects - YouTube
• LED Book Light - Inside a Book! : 10 Steps (with Pictures) - Instructables
• Plexiglass éclairé par ses bords | Plexiglasssurmesure.fr
• Techniques d'éclairage en plexiglas (galerie-creation.com)

Opening system that acts as a switch:

Inspired by Birthday greeting cards. 

resources :

• (4902) Musical Greeting Card with LED light (Happy Birthday) - YouTube
• Musical Greeting Card : 17 Steps (with Pictures) - Instructables
• Musical Greeting Card With Minimal Parts | Hackaday

sound option ( to add more cool options) :

• (4902) MP3 Sound Chip Modules by Talking Products Ltd - YouTube
• How To Hack An Audio Greeting Card | Musicworks magazine
• Add sound to anything - YouTube
• How DoAudioBirthdayCards Work | Audio-Digital.net

Our solution to integrate this into our project:

sliding switch:

• (5014) How to Make a Slide Switch - YouTube
• https://www.youtube.com/watch?v=qSmYT6hPjUU

battery:

• coin battery
• finger battery
• rechargeable battery