Hello everyone! This is my first time posting a topic, so please bear with me. If I make any mistakes, please let me know! It's definitely not intentional; I'm still learning.
To make it more fun for my friends who receive my QSL cards, I not only put a lot of effort into the design of the cards themselves, but also spent considerable time on designing the stamps. Here are the two versions of my QSL card stamps: one is monochrome, and the other is in color.

I've also noticed that many people put their own seals on their QSL cards, so I was curious about the designs everyone uses. Does anyone have a particularly unique seal design?