My TI-84 that I've had all through out late High School and College. The plastic face plates are a bit scuffed up, and I'm missing two of the little feet (somehow). Looking to get replacements at some point.
Got it for Christmas! They went all out, I have a case and screen protector. Sadly, it was just after my collegiate Calc 3, so I didn't have as many 3D things to graph. It also has 5.4, so I can't put ndless on it yet. Still has been fun to poke around on. Shame TI made their emulator a subscription that students can't buy. What scumbags.