December 7, 2019
TI LMV321 - general purpose 5V opamp: weekend die-shot
Significantly smaller than ST TS321, but low-voltage only. New designs though should use LMV321A.Die size 635x567 µm.

December 1, 2019
November 17, 2019
October 30, 2019
National MC74HC182N - ALU Carry Look-ahead : weekend die-shot
Die size 2063x1635 µm.Used back in the days when you built CPU's from TTL chips. Some still do it though : https://www.homebrewcpuring.org/
I hope one day I will have enough time to build one...

With metal etched:

July 20, 2019
Tesla MA7805 - 5V 2A voltage regulator : weekend die-shot
It's not a car. It is a voltage regulator. Die size 2344x2243 µm. You can read more about Tesla (Czechoslovak electronics company) here.
July 15, 2019
Ti CD4011BE - quad 2-NAND gate : weekend die-shot
Die size 1422x987 µm.
Update: Now with metal etched:

July 13, 2019