Do y'all see value in business cards still, or see it as mostly antiquated?
If you do use them, why and what kind of value do you get out of them? Bonus points if you show us yours. Even more bonus points if it has a subtle off-white coloring, a tasteful thickness, and, oh my God, a watermark.
Do you have a specific use case or need in mind? If you want it to remember things, you wouldn't necessarily 'feed it into an LLM' but if you want it to produce output more like how you'd speak, then fine-tuning would probably be appropriate.
Depending on what you wanna do, it will have different design requirements.
In general, I'd ask what's the desired goal first.