I currently work from a home office.
Hardware – My workstation is a 27″ iMac with a Core i5 CPU and 16GB of RAM. I have an iPhone 6+ to keep me going on the move and an HP MicroServer running Windows which I can remote into for testing sites on Internet Explorer.
Connectivity – My primary connection is uncapped DSL and I have a capped fibre link, delivered via last mile wireless, which I can route traffic through selectively.
Applications – On the design front, I have Sketch, Pixelmator and OmniGraffle Pro. I turn to iA Writer for Markdown and TextMate for any code I want to look at with syntax highlighting. Kaleidoscope serves me well for running diffs on a variety of file formats.
Chair – I have a Black GetOne Highback from Ergotherapy to keep me comfortable and productive.
Headphones – I alternate between using Apple AirPods and Aerial 7 Tanks.