Could a spider showing up somewhere unusual mean anything?

It can be meaningful to you without being a message from a deity or spirit. Spiders often turn up wherever there’s a quiet corner and something to anchor a web, so the chair may have been a convenient spot. You could treat the encounter as a prompt to reflect on what you were making or thinking about, while keeping the practical explanation in view.

I’d start with the plain explanation: a spider found a sheltered place and built a web. A web appearing overnight can feel uncanny, but spiders are good at choosing spots people don’t expect. If you want to explore symbolism, look at what spiders mean in traditions you actually connect with rather than assuming one universal meaning.

For a personal symbolic reading, the image of a web can bring up patience, craft, connection, or creating something piece by piece. Those are associations, not proof that the spider arrived for a supernatural reason. You might ask which idea resonates with your drawing session and leave the rest aside.

There isn’t one agreed meaning for a spider encounter, and meanings vary across cultures and spiritual practices. I’d be cautious about assigning it to a particular deity based only on the animal’s presence. If that angle matters to you, check sources from the relevant tradition and see whether the association fits.