Over the past few years I’ve built home servers out of all kinds of weird stuff, but somehow I never tried the most obvious “budget homelab” answer: old laptops. In this video I turn three laptops into a mini home lab to see if the whole “they’re efficient because they’re made for battery life” thing actually holds up. I break down the hardware (a Dell Latitude 7390 and two 2012 MacBook Pros), then build around the three basics: services, storage, and networking. My plan was simple: Proxmox on the Dell for containers/VMs, TrueNAS on a MacBook for mirrored storage, and then figure out what to do with the third system. Along the way I ran into the classic laptop-server annoyances: lid switch behavior, screens wasting power, and the general awkwardness of “server hardware” that really wants to be a laptop. I ended up doing some very janky-but-functional tweaks (like ignoring the lid switch, unplugging a display connector on one MacBook, and scripting the backlight off on the Dell). The payoff was real though: the Dell idled around 3.5W, the better MacBook choice landed around 15–16W, and the whole stack sat just under 50W idle while running Jellyfin, Crafty, Tailscale, Home Assistant, and Proxmox Backup Server. My takeaway: I wouldn’t go out of my way to buy MacBooks for this, but if you’ve got a decent old business laptop, a laptop server can actually make a ton of sense on a tight budget or in a high-electricity-cost area.