Perhaps also basis for a table coaster 3d hologram[1]
Adding to card thickness / modularity:
pop-up hologram display.[2][3] projected keyboard/display[4] & gain ability to respond to text messages!
[0] : https://www.instructables.com/Smart-Glasses-V2/
[1] : https://www.youtube.com/watch?v=xHbQRcIWxC8
[2] : https://www.youtube.com/watch?v=vRo8m_a6F54
[3] : https://www.youtube.com/watch?v=wM_Byrv9iBI
[4] : https://www.youtube.com/watch?v=gTnHEzshdIQ