Devices running Linux
Toshiba Chromebook 2 - 4GB RAM
Great Chromebook running Ubuntu via Crouton. A chromebook with crouton is a great way to learn linux and play with different distros without having to fight with network hardware setup. If you make a mistake it is easy to powerclean and start over.
MSI Nightblade Gaming PC
MSI Nightblade gaming PC with a quad core I5, 16GB of RAM and an NVIDIA GTX960 Video Card.
With room for a full size video card, WIFI built in, an optical drive slot and a somewhat small case this is a great PC.
Currently driving two 28" Samsung 4K monitors on Ubuntu.
ASUS RT-N66W Open Source Router
Bought mostly to have a DD-WRT compatible device before they are restricted by the FCC, I am currently running the latest version of the Asus DD-WRT firmware.
Toshiba FlashAir 16 GB WiFi SD Card
I have found using the SD card to be the most reliable way to run my 3D prints, my MAKEiT Pro-M 3D printer also allows me to make mid print configuration changes when printing from the SD card. Apparently the Toshiba FlashAir runs a tiny copy of linux and it lets me upload files to print straight to my printer.
Devices that work well with Linux
Brother P-touch 1230 PC Labeler
I use my brother ptouch labeler for all sorts of random things using the fantastic B-Label linux labeling program.
DYMO LabelWriter 450 Thermal Label Printer
Used mostly to print shipping labels via paypal for 3D Hubs orders and Ciclop PCB orders from the project store, you can also print very nice looking labels, stickers and cards using gLabels Label Designer.
Plugable USB Microscope
Microsoft Sculpt Ergonomic Desktop Wireless Keyboard and Mouse Combo
If you need an ergonomic keyboard, at this point there is pretty much a single competively priced model. In Ubuntu the dedicated calculator button on the number pad opens a calculator.