In this video I run a Raspberry Pi zero and 7” touchscreen of a powerbank making this a pi tablet :) . To make it fully usable you need do some extra stuff. You need a keyboard, usb hub, and a usb adapter micro usb adapter. The resolution is full HD on the 7 inch touch screen and lowering it makes it more usable :) . I have been wanting to do a raspberry pi tablet build for a while and this is definitely a start.
7 Inch 1024 x 600 HD: https://bit.ly/2CytYpb
Pi Zero W: https://www.banggood.com/custlink/DGGKbJuc36
7 Inch 1024 x 600 HD: https://amzn.to/2GKPJ9L
Pi Zero W: https://amzn.to/2M0g1VC