As far as I know, Seeed Studio's XIAO ESP32S3 Sense is the smallest ESP32 Camera Module.
It's basically two boards put together. There is a main board with ESP32-S3 and a camera board which is the expansion board, combined on top of it.
If the size of the PCB is small, you may want to focus on projects that do not require a lot of additional components or space. This will definitely enable more diverse projects.

[Tic Tac Camera Using ESP32CAM And Wireless Charging]
   • Tic Tac Camera Using ESP32CAM And Wir...  

[Seeed Studio XIAO ESP32S3 (Sense)]
https://amzn.to/42R2wOb

[TOPDON TC001 Thermal Camera]
https://amzn.to/3Ltt95f

#Tiny #Camera #ESP32S3 #OV2640 #SpyCam #ThatProject