Seeking a Fun, Safe Track Day Car Under $12k – Any Suggestions?

I’m looking to dive into track days but need some advice on picking the right car. My budget is roughly $12k (could stretch a tiny bit), and my priorities are:
1. Safety/reliability – I’d rather not end up in a hedge or stranded with a blown engine.
2. Fun factor – Doesn’t need to be the fastest, but something engaging to drive.
3. Beginner-friendly – I’m new to this, so forgiving handling and easy maintenance would be a plus.

What’s out there that won’t break the bank but still deliver grins per lap? I’ve heard Miatas are the default answer, but are there other underrated options (e.g., older BMWs, FRS/BRZ, Civic Si, etc.)?

A few questions:
- Are there specific models/years to target (or avoid)?
- Should I budget extra for immediate mods (brakes, tires, cooling), or are there cars that are “track-ready” at this price?
- Any hidden gems that aren’t on my radar?

Edit: the only practicality I care about is down the road carrying tires to the track with me. Otherwise this is a second car to track in.