System76 Oryx Pro - System76 Oryx Pro is a powerful and customizable laptop that comes with Linux pre-installed, but y can easily install Window and dual-boot if you want to use it for Windows development or gaming.
Raspberry Pi - The Raspberry Pi is a tiny and affordable computer that you can use to learn programming through fun, practical projects. Join the global Raspberry Pi community.
Dell Precision 7730 - Very robust 17" workstation with flexible configuration options, the cheapest display is not recommended however. Read review here.
Orange Pi - It’s an open-source single-board computer. It can run Android 4.
HP ZBook 17 - The performance of a desktop with the freedom of a laptop.
Odroid - The Odroid is a series of single-board computers and tablet computers created by Hardkernel Co.