I grafted the LCD screen and ESP32-S3 board from Waveshare to an unused 5th Gen Echo Dot. So i can utilise the nice speaker it has rather than the poor speaker box the Waveshare came with.
What do you guys think of the Franken Dot 
Anyone else modded the 5th Gen Dot?
More pics and a video here: The Franken Dot: Grafting an ESP32-S3 to a 5th Gen Echo Dot · Fulloch