I saw this post and article, and thought about how I never looked up what a packrat looks like:

• https://lemmy.world/post/26170343
• https://www.404media.co/the-digital-packrat-manifesto/

Turns out that there are a few species under the term, and at least one of them fits the attributes of tan eggs!

• https://en.m.wikipedia.org/wiki/Pack_rat

Image source:

• https://thebugman.us/pest-info/rodents/pack-rat/