Laptop: pre-touchbar macbook pro for most things, and an incredibly beefy linux workstation when I'm working on chromium.
Monitor: usually just my laptop monitor, but recently got a 4k monitor for the linux box.
Keyboard: So... everyone I know is getting hooked on mechanical keyboards. It's a very clacky future :D My friend Matt Gaunt leant me his Kono White Fox which I'm going to try out next week. So far i am a fan.
Mouse: Mostly my trackpad tbh. But for my linux machine I have some fancy logitech gaming mouse (maybe the M500?) with little weights on the inside.
Headphones: Bose QC35s. Best. purchase. evar.
Soft Apps: Mostly google docs, VS Code, and Evernote. Oh and I love Pinboard for bookmarks.
I also have an iPad pro and I do UI sketches using Paper. Really love that app.