14" HP EliteBook (or something - business class, with aluminium case). Closer to 10 years old than new. Bought it used.
i5 CPU (2 cores), 8GB RAM, 512 GB Samsung SSD (new).
Good keyboard, screen, decent batery, easily portable - does the job. Cost about $100, + some $50 for the SSD on a sale (it's a very good SSD - and overall a good deal for being mobile).