Returning to LinuxCNC After 10+ yrs, Questions on Old Mesa Hardware & New Builds

It’s been a little over 10 years since I last used LinuxCNC; back then it was for a one‑off prototyping project at work. Now that I’m retired, I’m thinking about getting back into it for some hobby projects.While going through some old boxes, I found some MESA cards I had kept as spares: 5I22, 7I33TA, and 3 × 7I42TA. They were stored properly and should be in good condition. I’m not sure how current this generation of hardware is anymore, and I’m reluctant to start a new build around something that is obsolete. Before I decide what to do with them, I wanted to ask: do these boards still have practical value for anyone running older systems? If so, I’d likely sell them rather than let them sit unused.As for new projects, I’m considering a few possibilities:

• 3‑axis router, for wood and softer materials. Likely steppers, though I may look at servos depending on what I decide for requirements.
• I have a CO₂ Iradion laser + PSU, new in the box. Could be a candidate for a laser cutter/engraver build, or I may just try to sell it if there’s still a market, as my primary interest is the router.
• Guitar pickup winder, something I’ve always wanted to build, and a simple way to get back into LinuxCNC.

Before I dive into researching current LinuxCNC‑based routers, laser systems, or pickup winders (does anyone know of one), I figured I’d ask here first. Any pointers on modern hardware choices, project examples, or insight into whether the MESA boards I have are still useful would be appreciated.