Written 23 Aug 2026. This is the first note if you are new. You do not need to buy a thing. Buy links are not tagged yet.
Start with what you already have
You do not need to spend money to start a home lab. The first lab is an old laptop that still turns on, or a retired office PC someone is giving away. The notes on this site are for later — after you have something running.
Look in the closet, the guest room, the drawer of chargers. A five-year-old laptop with 8 GB of memory is enough to learn. Install Linux, or a small home-server tool, and leave it on. That is a home lab. It does not need a rack, a new switch, or a file box you have not filled yet.
If you truly have nothing, look on Facebook Marketplace, Craigslist, or a local buy-nothing group for a retired Dell OptiPlex, an HP EliteDesk, or a tiny office mini PC. Offices throw these out when they refresh. People sell them for $20–60, or give them away. Ask for one that still boots, has 8 GB or more of memory, and a real ethernet port on the back. Skip the giant loud 1U servers — those are space heaters. A small desktop or mini PC is the one you want.
When that box is on and you have a reason to upgrade — files are slow, Wi-Fi dies in the back room, the leftover laptop is too loud — then come back and pick a buy. Until then, keep the card in the wallet. If the leftover box is already in hand, pick an OS first, then follow the first weekend install.
What we would do
| What you have | What to do | When to spend |
|---|---|---|
| An old laptop that still boots | Leave it plugged in. That is the lab. Learn on it. | Not yet. A new mini PC waits until this one is actually in the way. |
| Nothing in the house | Marketplace or a buy-nothing group. OptiPlex, EliteDesk, or a tiny office mini PC. $0–60. | Pay for a used office box, not a new N100, until you know you will leave it on. |
| A leftover PC that is loud or uses too much power | Use it anyway for a week. Then look at a quiet tiny computer if you still hate the noise. | Only after you know you will keep a box on overnight. |
Skip
Skip buying a rack, a new switch, or a NAS on day one. Skip a used 1U server from an office liquidation — it will be loud and it will raise the power bill. Skip “lab starter kits” that are just a shopping list. You are allowed to spend later. You are not required to spend to start.
Sources
This note is advice, not a product card. Local Marketplace and buy-nothing listings move by the hour. A retired OptiPlex or EliteDesk is the usual find. For when you actually want to spend, see used office gear and a tiny new computer.