I agree that Gryffindor, despite being the most common house (for merch at least lol) is the least relatable. It's quite annoying how difficult it is to find Hufflepuff merch. My boyfriend got me a cute shirt that says "Erryday I'm Hufflin'" and it has a badger just strutting along xD
That sounds really cute! Etsy is a good place to find house-specific merch.

Very true! He's also a puff, so when we get our own place, I plan to decorate with lots of puff stuff ^_^