I have a fully booted and spurred iPad mini that fits in a yoke mount. It has 4G and built in GPS so as to avoid multi boxes, but that's just my choice. It is possible to buy an Android tablet cheaper which will work just as well
I plan all flights on Skydemon both IFR and VFR though use additional tools for IFR routing. If I plan on PC I save the route to the cloud so as to be able to load it seamlessly onto the tablet.
When I start taxi I tap "go flying" on the iPad and follow the map and/or magenta line to shut down. VFR I tend to fly a route offset slightly from the magenta line.
I also have to put the plan into the built in IFR GPS so as to be able to drive the autopilot and fly approaches etc. But Skydemon on iPad is now my primary navigation tool.