This is not a conversation about guns. This is a conversation about items that have withstood abuse that are near unbreakable.
Some items I have heard referenced as AK47 of:
Gerber MP600: It's a multi tool
Old Thinkpad Laptops
Mag lights
Toyota Hilux
How old? I want one, but there are a lot of models
I bought a T14 Gen 2 on eBay for about $250. It can play some older games like Morrowind, but I mostly use it for book writing, D&D games, video downloading/ripping/burning, browsing, and such.
I put Linux Mint on mine and it runs like a dream.
Newest you can afford. T and P models, or X if you can.