A character of mine that I haven't uploaded yet, Spooks (Or Terren is his other nickname), is based off of a cat toy I got at a fair once.
For example, characters based on toys, or fursuits, or really any personal object.
I'll start, this is Ivy!
She is a furby based on a real one I own!
This is not a recent image, she now has one brown eye IRL.
lunation (and her assistant matryoshka) are both irl things i got at a convention in like ... 2014 or 2015? lunation is a plush and matryoshka was a kil 3d printed figure ! matryoshka actually sits on my laptop but i’m on the bus rn so i can’t add a pic D:
I would have to try and figure out where a photo is because she's packed away in storage, but Fio here was originally based on a plush cow I've had forever, named (drum roll please) Cow!
They are still in the works but I have a character based off a badly translated sheriff badge I have.
I'm not sure whether this counts but it's like FellowPigeon's example ¯\_(ツ)_/¯
I came up with the idea for Nev (seal who's a security guard) because the spray paint I'd got for college had a security seal on it and my brain immediately thought security guard seal.
I based this boy off a phone case I had in 9th grade. I created him so I could have a cute matchy-matchy chibi boi to tuck into the case, but I turned out liking him for more than just his aesthetic. He actually got me back into making OCs and world-building whoops
This is the one!! (In the spoiler box!!)
(edit) god that image looks bad on the teal site theme ewwww but y'all get the idea