Warthog (Ti-84+): Gift. She works perfectly, and is my go-to desktop calculator at the moment. She's a tidy little calc with extremely light signs of wear.
Beaver (TI-84+ CE): Gift. She's another one I've had since middle school. She's in perfect condition except for the fact that her on/off button doesn't work. I just use the reset button in the back instead. She has a custom slidecase with various graphs of functions, as well as six-inch and six-centimeter rulers. I mostly use her for the GB/GBC emulator she can run, which can be found here. She runs very smoothly, at what I assume to be full FPS.
Cobra (TI-84+): Gift, formerly a loaner. She's perfectly functional except for the B key, as well as a slightly-sticky-but-still-completely-usable Sin key. Not much to say about her!
Meerkat (TI-84+): My purchase. After Ermine got damaged, I went out and bought a brand new calculator. I had wanted to get an 83+ for the familiarity, but they didn't have one. She's in perfect condition, and is the graphing calculator I currently keep in my backpack.
Bluebell (TI-30Xa): My purchase. Unlike all of the other calculators on this list, Bluebell is a scientific calculator. Because of this, I only use her when a professor specifically requests a scientific calculator as opposed to a graphing calculator. That being said, she's my newest calculator, and she's mostly functional, although the decimal point key is weirdly prone to Just Not Working when you consider how new she is (less than a semester out of the box at the time of writing)
Stoat (TI-83+): Gift, bought on eBay. She doesn't handle like Ermine (the buttons press much easier, and she feels a lot lighter), which gives me a bit of an eerie feeling when using her. Some screen smudging. No longer working, cause of death unknown.
Ermine (TI-83+): Gift. My first and most-loved graphing calculator. Got water-damaged, but then I fixed her, but then she got thrown out by someone who thought she was still water-damaged. She had a big uglysplotch on the screen, and a row of dead pixels to boot, but she was my trusted calculator from middle school till my second year of college.