JOUR 1:
https://www.instructables.com/id/Paper-iMac-48/
https://www.instructables.com/id/Battery-Operated-Cardboard-HDMI-Retro-TV-Stand-for/
https://www.instructables.com/id/Make-a-musical-cardboard-guitar/
https://www.qqf.fr/uploads/infographiesHTML/598c71e079d00/index.html
JOUR 2: