Recent Chromebooks are extremely nice devices. For example, $299 at BestBuy gets you an Asus CM3401. It has AMD Ryzen CPU (with similar performance as 8th gen mobile i7), 1080p screen, and an M.2 SSD you can upgrade yourself. Downside is the weight -- 1.8kg (almost 4lbs) -- and that 16 GB RAM model costs extra. But perfectly good for using Crostini (ChromeOS's Linux VM -- you can run your favorite Debian programs, including those that use GUI, without reflashing your Chromebook a la Crouton).