I have absolutely no novelty socks, and I'm very happy about it. I don't think it's a good use of my money. I'd rather buy a pair of earrings if I want to make a fashion statement. They're more visible. It's a better investment.
The only reason to buy a pair of novelty socks would be if they actually did something beneficial that other socks couldn't do. For example, if they had rubber soles and I needed the traction for some reason.
I've noticed that some ENFPs I know love collecting novel doodads, like gnome-shaped salt-and-pepper shakers, and coasters with unnecessary but, I guess, nifty anatomical designs on them--brains and femurs and things like that.
I've known ENTPs to be nifty doodad collectors as well, to some extent, but not to the extent that I've seen with ENFPs.
I'm afraid I have some bad news.
You might be a mistyped ISFP
No, I'm not, because I hardly ever wear them. I buy them, occasionally, and then I don't wear them. That's an ENTP thing.
I have one go-to pair that I wear when there's a reason to look a little bit dressed up, and the rest of them just sit in a little container, except the ones that are lost on the floor of the car, under the seats or somewhere.
Dude, I would love to be an ISFP, but you make it sound like so much work.