Yeah, cat ears would be cute, but imagine that along cat whiskers :3

a tail to replace me moving my legs back and forth when I'm excited or happy

some horns maybe and cat ears obviously

im thinking about this for ages now. flying is ofc a humans dream and it might help against my akrophobia but having wings doesnt mean being able to fly.... otherwise some weird sensory organ? like being able to feel things i havent before? probably useful while tinkering.

a whole meltcat body :3

fox tail. multiple fox tails? or maybe a snake tongue 🐍

cat tail :3

gun

I already have the brain of a fish

I would be hunted down and kept in a government facility for experimentation if I had any externally visible ones. I guess another liver or something would be cool?

I would love to have a sensitive tail

Rabbit ears, and maybe the tail too

Some kind of eye that can sense more of the light spectrum would be cool. Or super hearing. Or super smell (actually that one might be more annoying than useful). Or shark teeth that keep on regrowing so I don't have to worry about going to the dentist. Or an extra heart just in case. Or octopus arms so I can know what it feels like to be multiple brains. I can think of more but I'll stop here

Cat ears are definitely appealing but I think I’d go for bat wings!!! And maybe also bat for ears, the tall triangular kind x3

Paws, tail, ears... maybe whiskers too!