My own small thing is my personal keyboard. I have both a mechanical and non-mechanical personal keyboard, mind you. They cost me a pretty penny ($100+ for each

My own small thing is my personal keyboard. I have both a mechanical and non-mechanical personal keyboard, mind you. They cost me a pretty penny ($100+ for each), and I wouldn't expect an employer to spend that easily. So I can just provide my own. I have really long arms overall and normal keyboards force me to both put my wrists at really weird angles and turn and twist my elbows to get my hands to fit there. Something like the Microsoft Natural was a decent-ish width, but the Kinesis advantage or the Ergodox are just amazing. It's funny to watch too - people are kinda scared to touch a Kinesis advantage "because it's split and weird", but they start touch-typing quickly and start arranging the keyboard parts as it is comfortable in small steps as well. You just nudge the keyboard part instinctively with your thumb or your pinky to make it more comfortable.